This car rental experience was terrible. First, the rental company replaced the originally booked SUV without any detailed explanation, unlike other rental companies. They didn't even check the car themselves and let me inspect it and figure it out on my own, which took a long time. They also pre-charged me over 900 NOK for fuel, but I haven't received a refund even after refueling. The two most frustrating issues were: first, their customer service phone was always busy, making it impossible to reach them for any help. Second, when we planned to return the car in Trondheim due to a change in our departure time, we were told by the staff during pickup that it would be no problem. However, when we arrived at the return location at 16:00, the store was already closed. The addresses of the two alternative return points provided by the store were missing or incorrect. After asking around, we found one return point at a gas station that was closed and another at a hotel that had been under renovation and closed for a year. We had no choice but to drive 40 kilometers to the nearest airport to return the car. The airport staff said they couldn't handle the issue, and we ended up spending six hours and a few hundred NOK on an airport shuttle back to our hotel, almost reaching midnight without any food or drink. We were extremely upset and will never rent an Avis car through your website again. What a terrible company!