I booked a Chrysler 300 (or similar), but at the AVIS counter, we were informed that the car Rent-a-Car booked for us wasn't of that class, and they showed us the system page. Therefore, they could only offer us a Chevrolet 4-seater or a similar model. The agent told us that if we wanted to get the Chrysler 300, we needed to pay for an upgrade, otherwise, we could only get a 4-seater. Although Rent-a-Car's customer service promised to handle this issue after our call, AVIS froze a portion of our card funds and later sent us a bill at the end of the trip...