Trex Trex is a grocery and general merchandise retail group. Trex's supermarkets are located in most towns and cities in South Africa. Over the last few years, profits have fallen and Trex has recognised that it has paid insufficient attention to customer care. Trex has now realised the importance of the customer experience at its supermarkets. In an attempt to earn the loyalty of its customers, Trex has introduced a loyalty card scheme that rewards customers with discount vouchers based on their spend and buying patterns at supermarkets The management of Trex is considering the introduction of a balanced scorecard approach to manage the performance of its stores