JUST CLOSE MY ACCOUNT!!!!!!!!!!

FNB I am so frustrated!!!!!! I have been trying to close my account now for more than a month and still no joy. I went into the branch to close the account then the banker there told me she cannot assist as I am a Private Clients banker and only they can close the account, she sent the request for the account to be closed and a few days later a person phoned me and told me I need to remove the money from my account so the can close the account. So I do it and then nothing happened, in the mean time the bank fees went off with a "insufficient funds" penalty because there is no money in the account. I phoned again and then the banker I speak to then stated that I have to settle the account as he cannot close the account, so I settled over R 700.00 but yet again the account is not closed, when I phoned again they say there is still 70c outstanding on the account, at this point I am so upset and asked to speak to a manager, they said they will get back to me, NOOOOO FEEDBACK and guess what something else went off off the account again and now I need to pay more than R 200 AGAIN because this account is still not closed. I do not have the money to just keep paying FNB for their mistakes, I have paid FNB R close to a R 1000 free this month because they did not do their job and close the account. I am not working anymore, I do not generate the income I used to so I cannot afford a private client's account, and this is most probably a blessing as how can you stay with a Bank with such poor service for client's they call private banker client's???