Shoprite Ebony Park

I went to Shoprite in Ebony Park to get essentials for my place, I was going to use my Old Mutual Rewards for payment. The Old Mutual Rewards work at Shoprite stored and other selected stores, I have used the service before at different Shoprite outlets. When I was done with getting everything I needed, before even putting my items on the cashier's table to have them scanned, I inquired with the cashier if they take Old Mutual Rewards and she advised that they do. After having items scanned and I had to pay then she advised their system doesn't accept that payment method, she proceeded to get another lady to come and tell me he same thing. I went to the Kiosk cashier and she advised she is aware of this payment method however I cannot pay by her till because I have a lot of items. I'm not sure if this is because it was almost time to close the shop however I received no joy and no help. I walked a few steps in the very shopping complex to a KFC, which is close to the Shoprite, they also accept OMR. I inquired about this payment method and they advised they accept it and right there and there I was able to order and pay for a meal using my Old Mutual Rewards voucher on their self service machine and it was accepted. Shoprite Ebony Park has the most rude and not so willing to help employees. No one even takes the time to get further assistance for a customer, they give you a one word answer and walk off.