Corporation tax being returned to business bank account.

I have tried to pay what we owe for corporation tax twice via the HMRC site, and both times severals days later it has been returned to my business bank account. Why is this happening?

Hi,

Please check you are using the correct payment reference number for the accounting period you are trying to pay.Your payment reference is accounting period specific so it will not be the

same year to year. You can find the payment reference specific to the relevant accounting period in your online Business Tax Account under View Liabilities and Payments.

If you have difficulty finding the payment reference, you can contact the Corporation Tax Helpline on the number given in this link: 

Corporation Tax: general enquiries.

They will be able to provide you your payment reference over the phone. You must have your Corporation Tax UTR to hand.

Thank yoiu.