You can change or cancel your booking right up until the booking starts. The best way to do this is by using the GoGet App, available on iPhone and Android
When you edit your booking, you can extend it, change the start and end times, or cancel it entirely. To change to a different car, you need to cancel your booking, then book the other car separately.
You can’t change, shorten or delete a booking if it has already started, even if you recently made the booking.
For example: if it’s 5.15, and you make a booking from 5:00 to 7:00, you can’t make any changes to the booking after it is confirmed. You can always extend your booking.