Worst service from Nedbank

I have witnessed gross unprofessionalism from Nedbank, about R5000 mysteriously disappeared from my account and I cannot trace how it got deducted from my account. I am a private banker from nedbanks and 2 weeks ago I reported the issue to my banker on email and she did not respond till I had to visit her offices in person. She made a promise to get things sorted quickly the matter was reported to *** who are even worse than my banker. Why am I saying so, I am saying so because these guys don’t respond to emails, they don’t give feedback, the don’t advise on estimate time to fix issue. I tried to make calls via call centre and they always refer me bank to my personal banker who is not assisting the situation