Driving Forces of Consumer’s Trust and Loyalty: An Empirical Investigation on Giant Supermarket in Malaysia Muhammad Khalilur Rahman1 Abstract This paper is the assessing and developing the customer’s trust and loyalty of retailing Giant supermarket in Malaysia. The study tries to elaborate an instrument to measure the customer’s trust and loyalty in this context. A survey of 190 participants is conducted and PLS based SEM technique is used to measure the convergent and discriminant validity as well as testing the hypotheses. The findings revealed that service quality and brand image have significant relationship with customer trust and loyalty, and overall customer trust has positive impact on loyalty in supermarket. In addition, a customer benefit has the interaction effect on relationship between service quality and trust, and brand image and trust in supermarket customer loyalty. The paper is concluded with an importance performance analysis and a summary of the main results of the study. Keywords: Service quality, Brand Image, customer trust and loyalty, Customer benefits, Supermarket, Malaysia 1. Introduction Giant hypermarket is a major supermarket and retailer chain in Malaysia. It is a subsidiary of Dairy Farm International Holdings (DFI). Its headquartered is in Shah Alam, Selangor. The study of consumer’s trust and loyalty is an important issue for Giant retailing supermarket. In the modern marketing strategy, customer loyalty is considered as a strategic tool in assessing and developing customer satisfaction and promoting customer loyalty (Saili, 2012). Customer loyalty program has been increasingly concerned interests in both marketing academics and practitioners (Leemheer, Heerde, Bijmolt, & Smidts, 2007). In 2006, the total customer loyalty programs enrollments were increased 1.5 billion in the United States. Similarly, today customer loyalty is increasing exponentially among Malaysian consumers in retail business. The development speed of customer loyalty in retail business in developing countries is faster than that in developed countries due to the rapid growing of the economy. Although, loyalty programs are widely used in retail all over the world, and retailers have indeed invested a lot of money into loyalty programs, many loyalty programs do not bring corporate managers their expected customer loyalty. Retailers in United Kingdom such as Safeway gave up loyalty programs and save company $75 million per annum. At the same time, other retailers such as E. Leclerc in France still invest millions of dollars per year to implement and promote customer loyalty programs. Furthermore, there is still an academic debate about the effect of retail loyalty programs on customer loyalty. Some of extant empirical study have proposed loyalty programs in retailing had positive impact on customer purchasing behavior (Magi, 2003; Lewis, 2004; Taylor and Neslin, 2005; Meyer-Waarden, 2007; Ho et al., 2009; Omar et al., 2011). Several investigators found that loyalty programs in retailing did not generate any impact (Meyer-Waarden, 2006; Leenheer & Bijmolt, 2008). These two opposite conclusions hinder the proper evaluation of loyalty programs; need to understand these programs. Customer loyalty is a key factor for retailers to achieve long-lasting success and sustainable operation. Currently, researchers have generally recognized customer loyalty including behavioral dimension and affective dimension. However, most studies in retailing have analyzed the effects of loyalty programs on customer loyalty only from behavioral dimension (Berger et al., 2002; Magi, 2003; Leenheer et al., 2007), and thus ignored the emotional dimension of loyalty. Due to lack of this study, the paper is to explore the effect of loyalty programs both on behavioral loyalty and affective loyalty. Previous studies on customer loyalty have empirically 1 Graduate School of Business, Faculty of Business and Accountancy, University of Malaya, Malaysia, E-mail: abd_khalil2@yahoo.com confirmed that customer value was a precursor to loyalty in service sector (Woodall, 2003). From a customer point of view, the prerequisite for them to participate in loyalty programs is that their expected benefits are superior to their expected costs (Mauri, 2003). Hence, retailers aiming at improving customer loyalty through loyalty programs should ensure that these programs could create and deliver superior customer value to their customers. Due to the limited resource of firm and the high costs of creating customer value, it is crucial for firms to investigate the effects of each dimension of customer value on loyalty and allocate resource accordingly. In addition, some related investigations have examined the positive relationship between perceived value of loyalty programs and customer loyalty (Yi and Jeon, 2003; Li et al., 2003). Customer benefits, service quality and brand image as relationship marketing approaches to customer loyalty that could improve customer trust and succeed customer loyalty program (Chen, 2010). According to past study it found that service quality, brand image and customer benefits affect the mediating role of customer trust in loyalty programs. Based on the conceptual research model and previous study of Malaysian retail supermarket, this paper will examine the mediating role of customer trust or customer commitment for loyalty programs and analyze the importance degree of each dimension of customer trust in loyalty programs. This paper develops a conceptual research model on the assessing and developing customer loyalty programs. Furthermore, it proposes the hypotheses regarding the mediating variable of customer trust relationship with customer loyalty (Fig. 1). Fig. 1: Conceptual Model Consumer’s Benifits Service Quality H4 H1 Brand Image Consumer’s Trust H3 Consumer’s Loyalty H2 H5 Giant is operating under the retail industry. Giant’s mission was always been to offer a wide variety of products at the lowest possible price. There is a slogan “everyday low prices, big variety and great value”. Although they have low price product but customers are not fully satisfied. They have so many management problems which are unable to satisfy customers’ wants and needs. Cleanness and freshness of products and service quality are very important but their products and services are not cleanness and freshness. Customers are usually feeling comfort in their shopping. If customers are not feeling comfort they will not buy regularly but if they feel comfort they will continue to shop in supermarkets. They do not have well organized pricing system to enable their customers to easily locate product price. Therefore, service quality is essential for the customer loyalty, if customers are found any difficulties they can move and shift to other shop. Customers usually come and go out by the some moment to purchase something from the retail supermarkets. The pricing tag of product is very important for customers; it is very confusing and problem to customer that there are some of the pricing tags at the supermarket are not properly pasted on the storage rack and products. Some of the Giant Supermarket outlets are not properly maintained. These outlets are quite dirty and disorganized. They have lack of employees’ benefit and customers’ benefit and insufficient of customer service counter. Objective of the study Millions of people are interested to shop in supermarket. In Malaysia, many people have middle level and lower income. They want to buy low cost price products and services. With their low income, they do not afford to buy expensive products and services. The objective of this paper is: (i) to scrutinize how service quality and brand image may achieve consumer’s trust and loyalty. (ii) to ascertain the moderating effect of consumer’s benefit between consumers’ service quality and trust, as well as consumer’ brand image and trust. (iii) to recommend how service quality, brand image, customer benefit and trust may adopt pragmatic strategy to ensure higher customer loyalty. People of Malaysia are multicultural, most of the people are not wealthy, many people are poor, but they are interested to shop in supermarket with lower price and good quality product and services. Today in Malaysia has many hypermarket and supermarket. They offer lower price product and service but they are unable to customer trust and loyalty due to inefficiency service quality. Recently Malaysian retail supermarket is developing their service quality but still now they are not able to customer loyalty. Specially, Giant retail supermarket should developing good service and lower pricing strategy in their business strategy. They also should provide high efficiency and good quality service to poor customers for the customer trust and customer loyalty. This research is very significant since a few people have done research on this topic to assessing and developing customer loyalty program in retail supermarket business. This research will help us to test the hypothesis that Giant retail supermarket provide maximum trust and loyalty to more customers. Finally, this research will help us to determine whether actually service quality, brand image, customer benefit and customer trust make more customers satisfied or not. This will be done by collecting primary data through questionnaires as stated in the methodology of this research and the data will be collected only from the Malaysian customers. Any strategy is adopted to improve the quality of service, it remains to be examined whether consumers are satisfied or not. The areas and the factors that are contributing to the satisfaction or dissatisfaction in services are also unclear, thus making it difficult to identify effective marketing strategies to maximize customer trust and loyalty in all aspects. Literature Review Consumer Loyalty Program Customer loyalty programs play an important role as a marketing strategy. It is conducted to the customer satisfaction through repurchase buying behavior. In the retail marketing strategy, a loyalty program offers the positive motivational influence and reward to its customers with the objective of assuring more loyal customers to company (Lacey, 2003; Yi & Jeon, 2003; Leenheer et. al., 2007; Omar, Aziz, & Nazri, 2011; Saili, Mingli, & Zhichao, 2012). It could association customers with a company and maintains a positive impact in the relationships between customers and company by various incentives. In the past decade, loyalty programs have been implemented almost beyond national boundaries. Retailing loyalty program have focused on analyzing the impact of loyalty programs on the behavior of local customers from a company point of view. For example, through an investigation of the Swedish customers in department industry, the study by Magi, (2003) found loyalty programs only had partial impact on customer expenditure. In American retailing, some researchers have found loyalty programs had positive impact on share of purchase, purchase amount, revenue and orders of customers (Lewis, 2004; Taylor & Neslin, 2005). However, other scholars argued loyalty programs did not have any impact on market share, repeat purchase rate, purchase volume, total purchase expenditure and purchase timing (Meyer, 2007). This debate of empirical studies demands a thorough solution for the validity of loyalty programs, that is, conforming whether loyalty programs could really engender and maintain customer loyalty. Superior perceived effectiveness of loyalty programs is necessary for firms to develop customer loyalty. An effective loyalty program should be viewed valuable by customers. Service quality and brand equity of customer loyalty programs depended on forms of rewards, and the relativity between rewards and products or services. According to study Saili et al., (2012) enriched their study by measuring perceived effectiveness of loyalty programs through three dimensions: cash value of rewards, probability of getting rewards and desire for rewards. The study Yi and Jeon (2003) stated that customers perceived effectiveness of loyalty programs to assess and develop the effectiveness of loyalty programs comprehensively. Perceived effectiveness of loyalty programs refers to tradeoff between interests that customers obtain from loyalty programs and costs that customers pay for participating loyalty programs. Many scholars have defined customer loyalty with different concept; most of them explored and measured customer loyalty from two aspects: loyal behavior and loyal attitude (Saili, 2012, Abdullah et al., 2012). Customer loyalty may measure from the actual purchasing behavior of customers. Attitude mainly measures loyalty on the basis of customer preference to specific product. Purchase behavior is the main component of loyalty which reflects the possibility of transacting with the same provider again (Jones et al., 2003). Previous studies about customer loyalty have measured from proportion of purchase (Baloglu, 2002), frequency of purchase and past activities of consumer (Ho et al., 2009). Actual loyalty between company and its customers is built on the basis of long-term relationship and emotional connection between them. Customer will pay a strong attention on retailers if their shopping experience meet their expectation and satisfy their fundamental needs. Customer loyalty plays an important role in an organization’s success. Customer loyalty is defined as a deeply commitment to repurchase the preferred products and services consistently in the future (Bloemer & Odekerken, 2002). Li & Green (2011) stated that customer loyalty is challenging to achieve for marketers and to explain by researchers. Customer loyalty is the result of successful marketing strategy that creates competitive value for consumers (Oliver, 1995; Bloemer & Odekerken, 2002). Service quality Customers’ satisfaction and dissatisfaction, royalty and retention are conducted with the service quality of the goods and services of the company (Li & Green, 2011). The customers’ purchase behavior is related to the product service that is offered by the company to satisfy their valued customers. Price is not the primary differentiating factor for consumers, rather they trust on quality services. Consumers are focused on quality service and findings specialized items. Therefore, company should provide everyday discounts to the customers for their purchase frequently. Customers’ evaluations of the service quality are quite difficult to be developed in the retail marketing strategy. Service quality has a tangible link to customer’s trust, as in fact, the consumer’s trust is represented by the service quality in one way or another. Service quality has a significant impact to the customer’s trust which directly affects the customer’s loyalty in supermarket. Brand Image Brand image offers a significant perspective on the understanding of consumer decision making. The study by Azevedo & Farhangmehr (2005) found that consumers can decide not to buy a product or not to shop at a particular store if they feel that the actions are not consistent with their own perceptions of themselves. They will always need symbols to help them sort out the complexities of daily life as they use products to express their social identities. Consumers search for products which have images that are compatible with their perceptions of self-brand image (Jamal & Goode, 2001). In the retail context, actual self-image congruity as the degree of match between a shopper’s actual self-image and a store image, and the ideal self-image congruity is the degree of match between a shopper’s ideal image and a store image. Self-image congruity affects the consumer’s purchase motivation because people have a motive to behave consistently with their selfperceptions. They also prefer products with images that match their own self-image. The study by Azevedo & Farhangmehr (2005) and Yang and Peterson (2004) argue that brand attitudes are the most abstract and highest level of brand associations. Customer’s Trust Trust is the willingness to rely on an exchange partner (Prasarnphanich, 2007). Trust consists of two distinct dimensions such as credibility and benevolence. Credibility refers to the extent to which the buyer or supplier believes that the other party has the required expertise to perform the job effectively and reliably. Benevolence refers to the extent to which the buyer is genuinely interested in the other partner’s welfare and motives to seek joint gain. This benevolence dimension is consistent with the issue of privacy and security concerns that vendors do their best efforts to protect customers’ personal information and prevent any personal losses due to their interaction with the vendors. Trust can be defined as a willingness to depend on an exchange party when someone has confident to that party. The study by Abdu et al. (2012) pointed out that trust refers to an advantage received by consumers in long-term relational exchange with the organization. Many researchers have suggested that trust acts as a mediating variables in the satisfaction-loyalty relationship. However, Taylor et al. (2004) stated that trust acts as a basis of loyalty creation. Trust is a precursor to commitment which eventually will lead to customer loyalty. Trust plays an important role in creating loyal customer. Customer loyalty plays a significant role in many businesses. Therefore, if the company can sustain their customer well, the customers will have less attention to switch to its competitors and keep being loyal to the company and eventually lead to high profitability. Commitment is defined as an enduring desire to maintain a valued relationship. It consists of three components such as instrumental component where one party takes some actions to demonstrate commitment. Attitudinal component signifies an enduring intention by the parties to develop and maintain the relationship. Finally, the temporal component suggests commitment in something only over the long term and in a consistent manner. Customer benefit There are plenty of studies on the relationship between firms and customers. However, most of these studies are investigated from the enterprises perspective. The marketing literature over the past decade has begun to focus on the motivation and desire of establishing and maintaining long-lasting relationship between customers and service providers. Customers should perceive the relationship valuable to stay in a long-term relationship. Besides core benefits, such as product and service quality, firms should offer additional benefits to their customers, including social, psychological, economic and other benefits. Many scholars have called these benefits “relationship benefits” and defined this concept as interests’ customer perceived from long-term relationship with service provider (Marzo-Navarro et al., 2004; Vazquez-Carrasco & Foxall, 2006). In this way, benefits customer gaining from relationship with company has been separated from core service of firms. It stresses the differentiation between interests provided by company and effectiveness perceived by customers. In 1995, Berry and Bitner have first explored the dimensions of relationship benefits through theoretical analysis in consumer service context. Berry suggested that relationship benefits should be composed of customized service benefits, risk reduction benefits and social benefits; whereas, Bitner recognized that besides social benefits, relationship benefits should include the benefits which could simplify personal life and save switching cost for customers. The relationship between customers and individual sales could bring convenience and better purchase decisions to customers. However, these studies analyzed only from the level of theory that put forward the three dimensions of relationship benefits by empirical studies: confidence benefits, social benefits and special treatment benefits. Confidence benefits refer to a series of psychological factors, which are related to reduction of customer perceived anxiety and risk after transaction. This type of benefits could not only make customers trust the service provider but also make providers maintain their commitment to customers (Gronroos, 2007). Therefore, it has been viewed as a key factor of successful relationship. Social benefits including sense of belonging, empathy, understanding, familiar, personal knowledge, social support and even friendship are derived from long-term relationship between employees and customers, and associated with interpersonal links between them. Special treatment benefits consist of economic interest customers obtaining from the relationships with firms and the benefits of customized service, because saving money is the main motive of customer to make relationship transaction. Methodology Data Collection Data was collected of this study through self-administered questionnaires from Malaysian Giant supermarket consumers in the Kuala Lumpur area of Malaysia. Kuala Lumpur area is the economic hub and a large portion of population buys their preferred commodities from supermarkets. The study is concerned with the customer trust enhances the development of customer loyalty in the Malaysian Giant supermarket context. In this study, male and female customers were selected in both gender since the perception, customers’ belief, customers’ attitudes and level of experience may differ in terms of customer trust and loyalty. Non-probability sampling mechanism is used in this study since participant can be selected based on personal judgment (Zikmund, Carr & Griffin, 2012). Instrument Partial Least Squares (PLS) based structural equation modeling technique is used to estimate the structural model. PLS is well suited in this paper since the constructs are measured by a single item, and PLS provides accurate estimates of interaction effects (Booker & Serenko, 2007). Data was collected between November 2013 and February 2014. In this study, 5-point likert scale is used to understand the level of satisfaction and dissatisfaction of Malaysian supermarkets’ consumers. Sampling and Response Rate The original sample size of the study is 190 participants are considered to data analysis representing response rate 52. 86%. The response rate was also considered acceptable compared to other similar studies. The study Ho (2008) received 153 completed questionnaires out of 500 questionnaires which lead to response rate of 30.6%. Therefore, the response rate of 56.57% obtained from this study is still considered acceptable. Data Analysis Demographic Information The sample included 52% female and 48% male with 33% participants aged below 24 years, 57% of the participants aged between 25 and 40 years, and 10% of participants aged above 40 years. The participants of the current study were well educated, in that 46% completed secondary/Diploma degree while 34% attained undergraduate degree and 20% university degree. In terms of respondents’ income level, 57% and 43% of the respondents spend less than RM200 and RM201–RM400 respectively. Measurement Model The measurement model (Fig. 2) shows the first and second order constructs. The results R-square value of customer trust is 0.287 proposing that 28.7% of the variance in customer’s trust can be explained by service quality and brand image. Furthermore, the R-square value of customer loyalty is 0.471 proposing that 47.1% of the variance in customer loyalty can be explained by the service quality, brand image and customer’s trust. Fig. 2: Measurement Model Footnote: SQ= Service Quality, BI= Brand Image, TRT= Trust, CL= Customer Loyalty Table 1: Hypothesis Test H1 H2 H3 H4 H5 Relationship SQ -> TRT BI -> TRT TRT -> CL SQ -> CL BI -> CL Original Sample 0.4150 0.1647 0.2937 0.7253 -0.1506 Standard Error 0.1332 0.0876 0.0922 0.1093 0.0889 T Statistics 3.1158** 1.8801* 2.8600* 6.6383** 1.6940* Significant level *p<0.05, **p<0.01 Table 1shows that service quality has significant relationship on customer trust and customer loyalty, therefore, H1 and h4 is highly accepted at p<0.01. The findings revealed that brand image has positive impact on customer trust and loyalty whereas H2 and H5 is accepted. Overall, customer trust has significant relationship with customer loyalty. Thus, H3 is accepted at p <0.05. Table 2: Discriminant validity using AVE Constructs Brand Image (BI) Customer Loyalty (CL) Service Quality (SQ) Trust (TRT) BI 0.814739 0.3131 0.6394 0.4301 CL 0 0.825893 0.629 0.5221 SQ 0 0 0.781153 0.5203 TRT 0 0 0 0.787909 The above Table 2 presents the discriminant validity for the constructs. The findings revealed that diagonals (in bold) represent square root of the AVE are higher than other indicators of the constructs that indicate the discriminant validity of all constructs. Fornell and Larcker (1981) stated each construct’s square root of AVE should exceed the intercorrelations of the construct with the other constructs. Table 3: BI_1 BI_2 BI_3 BI_4 BI_5 CL_1 CL_2 CL_3 CL_4 CL_5 SQ_1 SQ_2 SQ_3 SQ_4 SQ_5 TRT_1 TRT_2 TRT_3 TRT_4 BI 0.8854 0.8636 0.7567 0.7624 0.7972 0.2437 0.2883 0.1782 0.3192 0.2548 0.4841 0.5571 0.5343 0.5142 0.3949 0.3148 0.3781 0.348 0.3109 Cross loading CL 0.2993 0.3137 0.1729 0.1640 0.2725 0.7676 0.8837 0.8300 0.8363 0.8075 0.5579 0.5092 0.5065 0.4644 0.4068 0.4453 0.4186 0.4191 0.3583 SQ 0.6055 0.5649 0.4625 0.4186 0.5130 0.5605 0.5651 0.4455 0.5119 0.4957 0.8218 0.8352 0.8180 0.7899 0.6204 0.3866 0.4574 0.4200 0.3711 TRT 0.4228 0.3834 0.2602 0.2670 0.3683 0.4497 0.4380 0.3939 0.4466 0.4188 0.3760 0.4286 0.4208 0.4367 0.3690 0.8272 0.8520 0.7743 0.6880 The above Table 3 shows the cross loading for each item. The analysis of the cross-loadings support for the discriminant validity as such reflective indicator loads highest on the constructs. The findings illustrated that all items showed sufficient convergent and discriminant validity as the loading of each item is greater than all of its cross-loadings. Table 4: Results of testing convergent validity and reliability Constructs Service Quality SQ_1 SQ_2 Factor Loading 0.8218 0.8352 Cronbach’s Alpha 0.8365 AVE 0.6102 CR 0.8856 SQ_3 SQ_4 SQ_5 Brand Image BI_1 BI_2 BI_3 BI_4 BI_5 Customer Trust TRT_1 TRT_2 TRT_3 TRT_4 Customer Loyalty CL_1 CL_2 CL_3 CL_4 CL_5 0.8180 0.7899 0.6204 0.8750 0.6638 0.9077 0.7935 0.6208 0.8668 0.8830 0.6821 0.9146 0.8854 0.8636 0.7567 0.7624 0.7972 0.8272 0.8520 0.7743 0.6880 0.7676 0.8837 0.8300 0.8363 0.8075 For convergent validity, the average variance extracted (AVE) needs to be examined. The above Table 7 shows all the AVE values were ranged from 0.7935 to 0.8830. The internal reliability was assessed through composite reliability (CR) which is ranged from 0.8668 to 0.9146. The standardized factor loading of all items are greater than 0.60 that is recommended by Hair et al. (2010). The cronbach’s alpha values are ranged between 0.7935 and 0.8830 that suggested a high level of internal consistency reliability (Hair et al., 2010). Finally it is concluded that the all categories are achieved their recommended level that meet the higher the convergent validity and reliability. Table 5: Moderating Effect Relationship Sample SQ * CB -> CT 0.2305 BI * CB -> CT 0.1956 Significant level *p<0.05, **p<0.01 Std. Error 0.0890 0.0947 t-statistic 2.5898* 2.0654* Above Table 5 shows the moderating effects. On the basis of the results regarding the moderating effects of customer benefits has significant relationship between service quality and customer trust in Malaysian Giant supermarkets loyalty. Furthermore, the moderating effect of customer benefits has also significant relationship between brand image and customer trust in Malaysian Giant supermarket loyalty. Fig. 3: Moderating Effect of Customer Benefits between service quality and trust 5 Customer Trust 4.5 4 3.5 Moderator Low Customer Benefits High Customer Benefits 3 2.5 2 1.5 1 Low Service Quality High Service Quality The above Fig. 3 shows the moderating effect of customer benefits illustrated by graphical presentation. The Interaction Effect of customer benefits on Relationship between service quality and customer trust in Malaysian Giant supermarket loyalty. The supermarket with high level customer benefits was rated as highly to present service quality. The low of their customer benefits appear to be less emphasizing on service quality. Fig. 3: Moderating Effect of Customer Benefits between brand image and customer trust 5 Customer Trust 4.5 4 3.5 Moderator Low Customer Benefits High Customer Benefits 3 2.5 2 1.5 1 Low Brand Image High Brand Image In this study, Fig. 4 shows the relationship between brand image and customer trust in Malaysian Giant supermarket shows a difference slope in different level of customer benefits. The company with high level customer benefits was rated as highly to present brand image. The company with low of their customer benefits appears to be less emphasizing on brand image in customer trust in Malaysian Giant supermarket customer loyalty. Conclusion Giant retail supermarket in Malaysia can acquire customer trust and loyalty. However, there might have some factors which may contradict customer trust and loyalty in Giant retail supermarket, for example, they may adopt deceitful strategy, such as they write online or in the advertisement the good service quality or good private brand image of products, but customers might not be got good service and product quality in their stores. Thus, customers can move to other supermarket. The findings of the research can provide the real scenery of the Giant retail supermarket in assessing and developing relation to customer trust and customer loyalty. Based on the literature and findings of this study, it is concluded that assessing and developing customer loyalty program is very important. Although, customer trust and customer loyalty program does not guarantee repurchase on the part of the customers but still it plays a very important part in ensuring customer trust and loyalty. With regards to the challenges that managers or corporate level of the Giant retail supermarket in Malaysia should find out the following research question which is: “What kind of benefits do customers seek when they engage in relationships with retail supermarket and how relationships can strengthen Giant retail supermarket customer trust and loyalty?” The review of relevant literature in the fields assessing and developing of customer loyalty, relationship and service marketing, customer benefits will be determined as moderator that has relationship between service quality and trust, and brand image and trust in Giant supermarket customer loyalty in Malaysia. Giant retail supermarket can make trust their customers by providing social, psychological, and functional benefits. Effective relationships can also lead to Giant retail supermarket customer loyalty program. 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