Double billed - Still No refund

I visited KFC Randfontein on 30 June 2015 at 18:03. I went through the drive through. I charged my card. The transaction was approved and went through for the amount of R161.70, but the machine did not print a slip/receipt. According to the notice in the window if this happens your order is free. She then charged my card again and it was again approved this time I received a receipt. she advised that because it was double charged for the same amount it would automatically reverse the one payment. When I got home I phoned the branch and spoke to the manager whom advised that it would take 48 hours to reverse the payment. a week went by and still nothing. I phoned the call center number given on the slip 4 July 2015 spoke to someone and they said that someone will contact me. I received a sms with the reference number for my case CAS-124718-S9R5D3. again was advised that someone will contact me within 48 hours. It is now 14th July still no response from anyone and no refund has been made. Response received from Customer care stating that someone will contact me from the franchise. still nothing as yet. This is not fair to me as the client.