Terrible service & your refund process is such an inconvenience

I went to Mall of Africa Queenspark yesterday and the service was terrible. 1. I waited close to 2 - 3 minutes, because there was no one at the till and could not even locate them, and when they finally came to the till, they did not even greet, it's just descent to greet. 2. When the lady finally helped me, she let me complete the first form, then after told me they do not have cash to refund me. How do you not have enough cash, when you operate with cash. Do you not give float money for your cashiers???? 3. She then have to refund me on the card, only to realize I did not have the card that I thought was used with me, then I left the store without my money. 4. I just realized that the card that was used is the virtual card, which means they will not be able to physically swipe it, what does this mean for me now???