Bad attitude and ****py service

I hired a car at the Constantia branch from Eva and the service was friendly and professional. I hired a car because my car was at the panel-beaters after a small accident. It took too long for my car to be fixed and I was forced to extend my period twice. The last extension was done on Thursday the 3rd of December until the 7th of December. On the morning of Friday the 4th of December, the Panel-Beaters advised me that my car will be ready on the same day (Friday) at 4pm. I notified John from the Krugersdorp branch and he said he will arrange for the car to be collected on the same day which he did. On the Friday of the 3rd of December I also spoke to Eva regarding my refund and she said I should have the money by Wednesday (today). and guess what happened? My money is not in but instead an additional fee of R591.00 was debited from my account when the car was returned on Friday. How does that work? I'm really disgusted by this service. I hope people with some intelligence will respond and make sure I get my money, Luckily I have recorded all the conversations I had with both parties, so they cant say they didn't promise to call back, send an SMS or refund me by Wednesday.