Impossible to close my account

I have been banking with FNB for over 15 years & have always been satisfied. However, over the last month I have fallen completely out of love. There were 4 unauthorised debits going off my account, all under R100 of which I was unaware. Perusing my bank statements last month I became aware of these, cancelled them and went in to the branch to 1 reverse them &2 find out which companies these are. I was advised that this was impossible, and that I would have to continue to cancel these debits every 6months. This is ridiculous. I went on my way, and again 2 weeks later, another debit. I again go through the same procedure. The total ammount ****** from my account totals over R4500. Since I cannot get the money back, or cancel these permanently, I emptied and decided to close my account. Went in, was told this is also impossible. Beauty wad rude and abrasive, bur eventually conceded to attempt to close my accounts. This was the 12th. Then on friday she contacts me again and tells me she cannot as my account is in excess. For what? Bank fees? On an account I am trying to close? No thank you. How can you help me? Close the ****** account. Hire more helpful people. Don't rob me.