The worst service ever

I've been calling fnb on ********** 404 to do debit oder reversals and stop the the debit orders as most of those debit orders are unauthorized. The First I authenticated and was on hold for 30 minutes before I was assisted, the second time I authenticated and was on hold for 20 minutes then told I'm through to the wrong department and was sent back to the authentication system, today again I did the whole authentication process then went through to an agent who said her name is Lwazi and the moment I greeted her back she ended the call.

I am really unhappy with the service I'm getting from fnb, if it's not unauthorized debit orders its the app locking me out and the poor service when I call in.