billed closed petrol account.

I closed my petrol card last month and now I have received a letter that says I am still owing. I paid it in full and the person who was helping me called the petrol card department and I was given the settlement amount which I paid and I told the to close the account. I have been calling FNB and I keep on being transferred from person to person since Monday and I am now fed up. <br> <br> The service I get from FNB Welkom branch sucks and I want to close my account an go to another bank. Every time I go there I get bad service. the other time a consultant loaded loan money without my consent. every time I call FNB I get no assistance and they keep transferring me from 1 person to the other.<br> <br> I want the petrol card closed so that I can leave FNB!