You can exchange or refund a Stripe booking by following the standard TicketSource exchange or refund procedure.
For information on how to process an exchange or refund, please see the relevant guides:
For exchanges: 'Can I exchange a booking?'
For refunds: 'Refund a booking'
Individual refunds can also be processed directly from your Stripe account if you wish the customer to receive a different amount to cover the cost of the booking fee and any other charges. A normal refund through your TicketSource account will refund the face value of the ticket, less the booking fee and any delivery charges. TicketSource only refunds the booking fee in case of a cancellation or significant change to the event.