Last month we rented a car at Heathrow airport from Avis. The rental was for 10 days. On the third day a reperesentative called checking wheter we still had the car. She said the rental had been cancelled. She told me this had been an employee error and it would be correcrted. We realised later that our credit card had already been billed for the full ten day period. We called again and were told we would need to deal with this when we returned the car. We did this. It took time at the retune desk and we were told our account would be credite for the foault billing.

We flew back to Canada to find no refund had been made and we were esssentially double billed for the rental. We complained further and recieved a refund, however due to exchange fluctuations it cost us money. Futher emails were unanswered.
Avis was very quick to bill us on bothe occasions but a simle refund took them three weeks and constant complaints to complete.
We do not intend to rent cars from them again ever and would advise others to take theire business elsewhere !