No Customer service from FNB!!

FNB decided to debit my savings account for my loan and credit card, without first notifying me that they will track any amounts that will come in and debit, so I paid the amounts myself and the next thing I still get debited. Called the credit card department and spoke to some lady who said she cannot see that amount and will transfer me to another department (collections) and I told her to send the request to them because I cannot be held accountable for such, if I was notified they would track my account and debit, I wouldn't have paid them self. Well the loans department managed to log a refund for me but the credit department is giving me lots of run arounds, I asked to speak to the lady's supervisor but she just put me on hold for over 10 minutes till I just gave up cause clearly there is no help ill get from fnb, and she was probably just chilling with friends talking and laughing at me and waited for me to just hang up, not considerate that I use money to call FNB!!! luckily im going to close off all those accounts very soon and wave goodbye to FNB!