Pathetic service

The gist of a note sent to Avis on 15 Jan 2016: Rental agreement: E*** The invoice i.r.o. the mentioned agreement is incorrect regarding the fuel topped-up on return. Details given i.r.o. of trip meter, fuel top-up, etc. On return billed for 35 liter of fuel - a 100 kms after the vehicle was refuelled (full) prior to return at CT airport - physical impossibility on a Polo UP. Numerous letters to Avis: 15 Jan. Lerato Seerane, Online Support - circulated complaint to CT branch. 21 Jan: Mandu Lichechane, Customer Services Consultant, advised to allow three working days for investigation and a response. 28 Jan note to Mandu as where is the response. To date no more feedback and someone has scored a couple of hundred bucks of fuel at my expense. Surely it should be a concern to Avis as this indicates a serious risk issue inside their operation? The lack of response from their Customer \Service\" is pathetic and unacceptable! "