I scheduled a ride. They make you setup a time frame of 10 minutes where the car will arrive, 2 minutes before that, they cancel, and the new car would take 17 minutes to arrive, it was completing another trip. I had a doctor's appointment, so I went out, took a taxi, and cancelled the ride. They charge a cancelation fee to "cover the expense from the driver that had already driven 3 minutes", but hadn't completed the other trip.