Rented car at DenvIer airport, inspected car, had scratches on the side, so stopped at exit &;;;; scratches we're noted by guard. My receipt showed gas tank was full. Looked at gas level the next morning, showed 68 miles to empty. After 30 minutes on phone, was assured no gas would be charged, but I had to put gas in to drive it. At the airport after 30 minutes finally got gas fee reversed. no luck getting refund for what gas I didn't use Unsuccesful User's recommendation: check everything that sows on receipt before you leave parking area.