Refund cannot be be processed - WW Galleria

I've tried to return clothing items at your store in Galleria, Durban. I've paid via the Samsung app. When I went to the store to return the goods, the store manager refused to take the goods (tags in tact, purchase made 1 May 2021), as the card number on the slip differs from the physical card presented. Samsung Pay uses digital card numbers that are different from physical cards. I've tried to explain this and the manager did not take heed. Please visit the Samsung App site and you will see this clause (of card numbers differ) in the returns policy. Please can you speedily address this issue and arrange for my items to be refunded.