FAQs by Groups :      General Questions | Domain Names | Hosting | Resellers | Bottle Direct | Affiliates | << Back - FAQ Home >> Frequently Asked Questions : 75 If I make a mistake using BPAY what should I do? If you have: - paid too much - paid the wrong Biller Code or customer reference number - paid the bill twice by mistake, you will need to contact your bank, building society or credit union (either through phone or internet banking) and they'll help you sort it out. - If you've paid too little Don't worry; simply make another payment to top up the amount.