AVIS COMMITS ***** ON KM TRAVELED BEWARE!!!!!

Good Day, I have been an avid customer of Avis and my last rental was a disaster, I rented a VW Tiguan from Avis at King Shaka International, The rental went perfect, It was after the rental with regards to the hold amount that everything went wrong, There was an amount on hold on my credit card that I was told will be returned to me after rating Avis poorly on the last rental due to the hold amount not being returned, A lady from avis customer care called and told me the amount will be returned 2 weeks ago, Instead this amount was taken as a payment, I called in to Avis customer care and they said this amount was taken as I had done 1000km on the car, I told her this was impossible as I had travelled from King Shaka to Umhlanga, After investigation they told me there was a finger mistake on the input on the KM's done, THIS IS UNACCEPTABLE! YOU CANNOT JUST CHARGE CLIENTS FOR MILEAGE THEY HAVE NOT DONE!!! The lady said she will send me an email to state all this and the investigation and the claim logged, I DID NOT RECEIVE AN EMAIL, I CALLED IN YESTERDAY AGAIN AND THEY SAID THEY WILL SEND ME AN EMAIL, NO EMAIL TO DATE! TRULY DISAPPOINTED Rental Agreement Number: ***