DON'T USE THEM!!! Scheduled a pickup the day before to prepare for plans across town. We accounted for traffic/rush hour/distance, but not for the cab showing up more than 30 minutes late. We missed out on our destination plans by default because we ended up more than 30 minutes late, and the driver told me we wasted his time when I proposed a discount based on his calculator of how long they would charge you if the cab was kept waiting. We had everything accounted for, except bad service!!!