How do I amend my Direct Debit bank account? To amend the bank account we take Direct Debit payments simply send us an email with the details of your changes. Related articles How do I change my Direct Debit details? How do I contact you? My bank details have changed. What do I need to do? If my Direct Debit fails, will you attempt to take the payment again? Why can't I change my Direct Debit amount?