When you make a booking request with Beds on Board we send an authorisation for the full amount from your card. This is not a payment, it is a pending transaction that will either:
(a) be processed as a payment if the Owner accepts your booking;
(b) be voided if the Owner declines your booking.
When a transaction is voided, the authorisation should disappear from your statement within 24 to 48 hours but it can take longer, depending on your bank.
If you see a delay, you should contact your bank who should be able to release the authorisation, or give you more information.