Charged for a swap which was never full the first place

I’m an avis preferred member. Who’s totally dissatisfied with regard my last rental I had with them. Unfairly and wrongly charged for a car which was a swap at Eastern Cape at Queenstown branch. I challenge the whole avis team to overlook on the system and see that how long and how inconvenient was it for me to actually do the swap at Queenstown, had to drive with my family more than 700km although called the roadside assistance to do a swap. Swap was eventually done and returned the car to Cape Town branch and still now have to log a query for being charged for something which I were not liable for. I believe I was supposed to receive a full car and were to return the car also full. The car I got from Queenstown branch was never full.

Don’t feel that was treated like a preferred member.