no response from anyone

I did a limit increase on my account in the beginning of August which was approved and I was asked to send the necessary documents to the email address given. after a week got an sms to send the documents they needed. so I did. next week got an text to send the documents?? so I did phoned them spoke to consultant forwarded documents to her and she confirmed receipt(21 August 2015). yesterday 2 September got an sms to send the necessary documents. I phoned the call centre who confirmed receipt lodged a complaint on my behalf. no response. phoned today (3rd) nobody can help me supervisors are busy send a email to regional manager and so far no response from anyone at FNB and also no increase. if they want me to move to another bank I will do so gladly.