I called fnb customer care to close one of my easy acconts i even went on the banking app to make the account zero balance

I called fnb customer care to close one of my easy acconts i even went on the banking app to make the account zero balance.I called 12 days ago.i told the agent i dont want to pay service fees again for nothing.Now the account is not closed and Fnb want to charge me fees again to rob me.