When picking up the car, an elderly gentleman who attended to me charged me $426 (by card) for the rental. However, I was later overcharged an additional $806.64 (by card). I pointed out the overcharge of $806.64 at the time and requested a cancellation of this portion of the pre-authorization, but the extra charge has not yet been canceled. I hope your company can help negotiate this. The return process was exceptionally simple; the staff was efficient and provided good service. I will rent a car again next time.