Poor refund service at Legit Zevenwacht

On Monday 14th July, @9:30 I went to Legit Zevenwacht to return shoes that I had bought on 26 June using my credit card. Upon my arrival I was assisted by an African lady (xhosa speaking) She was not wearing a name tag therefore her name remains unknown to me. She asked me to come back in a few minutes because she did not have enough money for a refund- i obliged and came back 10 minutes later (9:40) she then said she still doesn’t have enough money, tried to call her other colleague that was apparently at a bank. I asked her to refund me on my credit card because that is how i paid for the shoes in any case, she refused saying that the slip shows that I paid cash for the item. I then went on my banking App and showed her the transaction that went off on my card of the same date, time and amount! She still refused telling me that is not how i paid for the shoes! I left the shoes at the store and without my money because even when she asked me to come back in a few minutes I told her I am also going to work, I don’t want to be late and I do not have time to wait but i will try. What an inconvenience very early in the morning!

So i would like to know from you: what does your refund policy say? How must a customer that pays using a credit card be refunded? What are you doing to stop this from happening again?