On the advice of our bank, we only refund the card that was originally used to pay – this is to make sure that the refund goes to the right place and avoids any problems or discrepancies. Most of the time, if you've had a replacement card for the same account the refund will go into your account anyway and you won't need to do anything.
If your account is closed or you've had a replacement card and the refund still isn't appearing in your account after 15 working days, please contact the card issuer. They'll be holding the funds for you and will be able to arrange a transfer to your new account.