These people are crooks! I prepaid for a ride to SFO and they showed up 45 mins later, so I took another cab - and A1 American Cab charged my card anyway - for a ride I never received and a service they didnt provide - they charged me $85. I called them to dispute this and the driver said, "ha ha you gave him my card # so there is nothing you can do" what a thief! DO NOT USE THESE PEOPLE! I told them I would dispute it with my bank and he laughed.