FNB still deducting money after settlement

I have a personal loan which was settled and my account is still being debited.

After calling the call centre and submitting the POP I have not heard anything. I go to and FNB branch and I am advised that they can't assist me in the branch, but I can use the banks phone. The kind gentleman assisted and phoned the call centre.

I then spoke to a call centre agent who advised me the system was off-line and that I should call back in an hour.

It is ridiculous that I should have to call back, why does the call center not take the details and call clients back?

It is frustrating that when it comes to a new service FNB is quick to assist and call back, but when they take money which is settled then it is a mission to get an answer.

If this is the case I will move my bank accounts to another bank (after 13 years)