KeyBank NA Bank Account Or Service Complaint

KeyBank NA Bank account or service department,

Other bank product/service Account opening, closing, or management Oregon

I called in to close my credit card on -/-/2015the account was paid to zero and I was told it was closed. I have been getting notified each month that it is past due and late fees keep getting assesed due to unpaid interest. I have told now on 3 occasions that the situation is being taken care of to a bank error in not disclosing that there was going to be an addition $12.00 to pay. They keep waiving the late fee and telling me that the account is closed while giving me confirmation numbers of this. As of today it is still not resolved and I am getting nowhere with the bank. I want them to remove the late reports as I have outstanding credit and being penalized because of their incompitance. And for someone to help me get this card closed out like I having been trying to do since -/-/15. I am beyond frustrated and about to lose my mind over this.