I rented a car for week in St Thomas, USVI through Rentalcars.com with Budget, prepaying $289. The Budget car and service was fine, however only $234 was credited, a discrepancy of $55. It's difficult to contact Rentalcars.com- email forms and phone calls. The end result after much time wasted waiting, was that I am out the $55. They say no service fees are charged, but they clearly are not remitting the full prepaid amount to the actual car rental company. Stay away from this outfit!