Very bad service

I have honestly had the worst service with FNB trying to sort out an issue for over a month. I have made so many phone calls, had so many bankers tell me I will be contacted with feedback and all I have received is pathetic service! Firstly I was wrongly informed about my query and secondly my query was sent to the wrong department so my problem has just been delayed by a month. I logged a complaint and and was told someone would contact me within 24-48 hours, surprise surprise no call or feedback. Also what is the use of the secure chat if no one can actually help you and all they can say is Its been logged and someone will contact me ? I have honestly had enough of this bad service!