The worst possible service you can receive!!

A month ago I visited KFC meredale's drive-through and made a purchase. As my payment was being processed, the speed point indicated that the purchase had been approved but the cashiers machine jammed. It then had to be re-booted and I was charged AGAIN. She then apologised and told me it would be reversed within 24 hours but I should keep the slip and return should the funds not be reversed. I went back 2 days after and spoke to a lady supervisor who told me she couldn't help as her management was not at work but she would Inform them as I told them up front that drawing bank statements is not a free service that the bank offered and I have a really active account so might need to draw 4/5 pages to show on 1 page that I was indeed double charged with no refund. 2 weeks later, no response. I went to them again and spoke to a Mr king William who arrogantly and dismissively said i should draw the statement and if need be, he would refund the bank fees out of his own pocket. I did as he suggested and I only got my money for the meal. I asked him to send a written confirmation that my charges would be paid. A week later nothing, my account is now overdrawn as a result and he us rude