paying for one meal and being charged twice

on the 10th October 2015 at 17:05 I went to Kfc to buy a family meal , the total amounted to R210.70 and I produced my cheque card but their machine froze and I was told the transaction did not go through , I paid cash , when I got home I looked at my phone and the transaction was successful and there was no reversal done , the very same day I drove to KFC to explain to them that the money went through I was then told to wait 48 hours for the money to be reversed . within the 48 hours nothing happened I had to call kfc and I spoke to Barbra who was very helpful . on the 13th October the money was reversed , <br> to my surprise I was charged again the very same amount on the15th October I got a message from my bank that the funds have gone off once again . to date nothing has happened I haven't been refunded my money back . now am being told to wait 2 days , how difficult is it to process a reversal or R210.70? why should I wait that long for my money . I need this matter to be resolved soon please.