I repeatedly emphasized that I didn't want any additional services, but they still charged nearly 300 USD when I returned the car, saying it was for roadside assistance and an extra tank of gas. I'm certain I didn't request those services, and I even asked during the rental process if there would be any additional fees besides the upgrade fee and was told NO. However, they charged me upon return, and there was no one to reason with. I'm puzzled as to why these charges weren't deducted when I picked up the car but only when I returned it. It's clear they are taking advantage of the fact that you might not read the contract carefully, which is very frustrating.