KFC Somerset Mall Shambles Service

On Saturday the 8th May 2021 I went to KFC Somerset Mall to buy wings special, I was told I could only order the R12.95 via the KFC app which I proceeded to download and once the app was installed, I attempted to order. The app said I needed to spend at least R70 which didn't make sense to me because my order was R72.45. I asked for help from the people in the store, a lady by the name of Aphiwe with grey uniform came to help with another coloured lady who's name I can't recalll. I attempted to pay with my card on the app but the it didn't allow me to and tried pay in store, it also didn't go through. Aphiwe, in her attempt to get rid of me, she said "sometimes an order wouldn't go through because a particular shop doesn;t offer the deal, so our shop doesn't offer this special" off which she was lying an order of another customer by the name of Avela or Avile came through and she only ordered one packet of the wings. The coloured lady said the order is showing in the back office screen but where the payment needed to be taken it wasn't showing. Aphiwe decided to inconvenience me by asking me to give her a cash payment so that when the order comes through, then they can ring it up. I said I do not have cash, she said go to the ATM, and when I asked that I should be charged by the banking withdrawal fees because of KFC's system?, she said to the colleague "khamnike imali yakhe, hyu" which translates to "give him his money back and the wings" , also they refused to give me a receipt. Under the regulation of Treating Customers Fairly, Aphiwe with grey uniform whom I assume is the store manager failed to recognise expression of dissatisfaction and just threw her toys out of the court. As a customer I have a right to question the service I am paying for if it isn't satisfactory, giving me my money back and the product I wanted to buy is not addressing the issue but an act of rudeness, lack of customer understanding, complaint handling.