Worst service imaginable

I decided to move from Standard bank to FNB and it has been the worst experience imaginable. I app**** for a premier cheque and credit card. There was so much confusion and mix up with debit orders and salary move that I still have to maintain both accounts. Getting the cards is easy, everything after that was terrible. I had to provide all my FICA in order to get the credit card, which was delivered. Everything seemed in order until I got an SMS saying the account was placed on hold. I received a mail requesting more FICA, sent that, just to get a request for more FICA . Sent a mail for a manager to contact me....still waiting, no one bothered to contact me back. Then randomly out of the blue got an sms that I no longer qualify for premier banking, how is that even possible. Logged a complaint, took a few days but eventually got a call that I missed. The person left a msg saying they will send a mail. I did not get a mail. Two days later missed the next call, the lady left a message to call her back which I did. The call was not answered, I left a message but received no call back. I have phoned numerous times with no answer. I received a mail which did not answer any of my questions. Your service is pathetic. Tell me what I need to do to get my issues resolved or provide me with the details required to cancel everything and move back to Standard Bank.