Bad Service

I am so disappointed at the service I received from FNB Premier, i have been calling to close my account. I called beginning of March to closer my one account and was promised that someone will contact me to finalise this and i never received anything. I then called two weeks later to find out, but it seemed like that was not assigned to anyone still, I was then told this will be escalated so that the process will be quicker as I waited for two weeks with no feedback. Someone then contacted me that day, but because i was in a meeting i called back and the lady I spoke to said she will send a direct email to that person to call back again and two weeks later I still waiting. Now my account is even on a minus cause i have to pay charges that i had not budgeted as I had hoped that this would have been closed in time. This morning i decided to logon my internet banking and shock of my life is i have been charge twice on my monthly charges? why should i pay double? and now things are been taking from this account which I initially closed in time. This is really unacceptable, I cant be covering these costs because i closed this account.