Disappointed by FNB

I was misinformed by some agent and R2900 was debited out of my account instead of the R250 that I had permitted. I immediately informed my bank through the app on the 25th July to stop that transaction instead they blocked my card instead of dealing with that particular transaction which cause further inconvenience. On the 27 I went to FNB Maponya, after standing for 4 hours outside in the cold I was told that I needed to speak to ***** and handed a phone. I spoke to a very less interested consultant who couldn't wait to get rid of me. In the 5th of August I phoned FNB and spoke to Khanyisile Shezi from ***** who told me absolutely nothing and was rude when I asked for a manager. I was on hold by the wat for most of the time. I asked for a supervisor which I never got to speak to. She called me back and promised that the Supervisor will get back to me and I am still waiting. All I want is for FNB to reverse that transaction and then close my account. Their service is beyond disappointing.