Jet at Phoenix Plaza Durban

I have been to Jet last Saturday (17/02/2018) and I purchased for an amount of R370, I have used my bank card to swipe as I didn't have cash. The lady at the cashier advised me that the payment wasnt successful so she tried again and I was double debited. The cashier advised me that I would get my money reversed back into my account as soon I go out of the store. I waited a few minutes and the money didn't come into my account. I then asked to speak to the floor manager she advised the money will take 24-72 hours to be put back into my account. Even then the cashier still advised me that I will get my money back as we speak. I then I asked to speak with the store manager, she advised that it would take 24-72 hours to come through and even in her presence once again the cashier advised that I will get my money as we speak. I was advised by the store manager that she will contact me first thing on Monday morning and give me feedback but I never received a call. The store manager advised they normally ask for a bank statement but because of what happened I don't have to send her one I must just write down a statement. So I went ahead and wrote the statement and left it with her. Its now way pass 72 hours and I havent received any response regarding the money or even a call. This is pathetic service that I have received and it's money that I need. This is not my fault they having a problem with the machines at Jet. They manager did advise me that this has happened with other customers also and they are still waiting for they refund.