If your booking was declined, and you have double checked that there are sufficient funds on the account, the issue is with the credit card provider. In certain cases, banks do not process certain transactions which are either from websites you have not used in the past, or over a certain amount of money.
Once your credit card has been declined, please contact your bank in regards to allowing the purchase to pass. Make sure to indicate the date and time at which you attempted to make the booking, so as to simplify the process.
Following the unblocking of funds, please confirm with your bank that the transaction has been processed. If it has not, please contact our support team at firstname.lastname@example.org before proceeding with another attempt at booking, as this may cause multiple bookings.