The refueling fee charged was inconsistent with what the staff at the parking lot stated. We said that if the fee was too high, we would go refuel the car before returning it. The staff checked the fuel gauge and gave us an approximate amount, which we found acceptable, so we went to the airport counter to complete the return process. However, the actual charge was several hundred yuan more than expected! They promised to refund the difference if it was too much, but even though we took a photo of the fuel gauge at the time, we still haven't received a refund after returning to our country and negotiating proved futile. It's a scam.