If you have sent a duplicate payment by an error, or make a duplicated payment for the same invoice, the extra amount will be added as available funds in your account that you can use to pay other invoices or buy new services.

If you wish you can open a Ticket to Financial Department to be able to ask for a refund for duplicate payment, if your payment was made by 2CheckOut you have 3 working days to request a refund, otherwise you have up to 7 days.