Pathetic service

My personal loan was paid. My installment is due again on the 2nd October. My banking profile has two messages each time I log in telling me my account is in arrears. When I use an atm it says the same thing. Today I called 2 useless people from fnb to advise me as to why this is happening. No one can give me a clear answer. They just not making sense. I'm so frustrated. The online message system is just as messed up. FNB seriously needs to up their game regarding service. I'm ****ed off and so annoyed. My pressure is way above normal. I may as well cancel all these banks and move everything to capitec. Seriously bad