No refund / Unauthorised Billing

I hired a rental vehicle through Avis via my insurance company on the 8th of June 2015 and returned the vehicle on 15 June 2015. An amount of R1200 was requested to be paid as deposit which I did.<br> <br> I was informed upon return of the vehicle at the branch, that the deposit will be refunded to me within 48 hours, and that any outstanding fees (tollgate etc) would be deducted. On Friday morning, the 19th of June 2015, I called the customer care line and was promised that it will be refunded in 24 to 48 hours and that i should check my bank. Up until today the money has not been refunded. <br> <br> I also received an invoice on Monday from AVIS (after having another deduction on Sunday evening) which included fuel, even though I filled up the vehicle 2km's from the branch upon return. <br> <br> The service from AVIS and especially the Pretoria Central branch is shocking. I will definitely not make use of them again.