MISSION TO CLOSE ACCOUNT AND I HAVE TO KEEP PAYING THE ACCOUNT FEES

I was informed that i can move to a Premier Account and opened the account and changed my debit orders to the Premier Account. I still have the Aspire Account and have been trying to close this for a month now, everytime i contact the chat on the app, they tell me there is a payment that ius still outstanding - it cannot be and that is a bad excuse. I want this account closed as well as the Savings Account attached to it. I WILL NOT PAY BANKING FEES ON THIS ASPIRE ACCOUNT THIS MONTH AT ALL - PLEASE CLOSE THESE ACCOUNT