Refund unauthorized debit immediately!!!

I made online booking for Capetown online for the 14th April and prepaid (rounding off amounts) R2600. When we got to CT, I wanted auto, so changed to Tucson which lady said would be +R300 per day. Which I was fine with, meaning I’d be charged an additional R1500 for rental. Was charged again for additional driver, which I’d already paid for on prebooking! Then I was debited R7k on that day. When I asked why she said it was holding deposit and it would be refunded. When we returned the car, there was small scratch on front right rim. I had super waiver, asked the guy if someone would call to explain, he said yes. NO ONE CALLED!!

I rented again the next weekend at OR without any incident. The holding refund done with 2hrs.

Then on Saturday I was debited R5,5****! For what??? That means I’ve been charged +R13k for this rental!! No one calls to say there will be a debit! NO notification whatsoever! I’ve emailed and called customer care and they saiid they would call be back, NO ONE DID!!! I want that money refunded to my account immediately!! It has been budgeted for and the fact that no one can tell me what it’s for has made me loose trust in Avis! After years of renting with you even though I can get cheaper elsewhere. I’m extremely disappointed!!!