Account frozen after I made a double payment

So this will be the first time that I have a complaint regarding FNB...<br> <br> I have made an extra payment on my Credit Card, which is more than my minimum scheduled payment I set up on my Credit Card. I then forget to pay an account from my checque account, so I want to transfer my available funds from my Credit Card back to my Checque account. THEN...ERROR217 - Transaction unsuccessful....<br> <br> <br> I am not somebody who likes to complain a lot, however, after laying a complaint with FNB on their online banking site, they still have not come back to me with an answer or resolution.<br> <br> I am really getting annoyed, because now all of a sudden my bills are falling behind, thus damaging my credit score. This is unacceptable from a service level. I have always done my darnest to keep my accounts up to date, which I have not always been able to do, however, I do correct it ASAP!