How do I cancel a booking and refund a client?

Open the booking and choose Cancel this booking. There is a checkbox to refund what the client has already paid, and you can add a note that is sent to the client. If you leave the box unticked, the booking is cancelled without a refund.

Payments that are still waiting, or card holds that were never charged, are cancelled or released automatically. Delivered bookings can't be cancelled this way.