Can I get a refund if I make a double payment?
If you accidentally make a payment twice, the extra payment can be used towards your next bill.
When a bill is issued, the direct debit amount on the bill will be requested from your bank on the due date shown. This will happen regardless of any payments received after the bill has been issued.
If you made a payment in addition to your direct debit, this payment will be added to your account balance and can be used towards your next bill.
If a refund is required, see How can I get a refund if my account is in credit?