I want my money, I don't owe you a dime.

The lecturers are good the problem is the support services. You pay an account in full and the stop order you forgot to cancel with your bank goes off, you sent the proof when you settled the account and they acknowledged that the account was paid in full. When you ask for a refund for the extra money paid in you are taken from pillar to post. They tell you a finance department has to allocate your payment but you received proof from them that the account is paid up.

I hate asking for my money like it's theirs. #PayBackTheMoney Give unto Ceasar what is Ceasar's.

Your debt has been paid in full, pay back to your customers what is due to them and stop playing with people's monies.