No assistance whatsoever

I have been trying for more than 3 weeks to close my FNB credit card account... with no success! My statement shows there is a positive balance of R57, however FNB says I owe R113 on the account and will not close the account until I have paid it. I have asked on NUMEROUS occasions for a statement reflecting this amount owing but I am completely ignored and get the same email (when they do decide to correspond) that I owe R113 with no statement showing this. I have attached copies of my statement showing that there is a POSITIVE balance of R57... so nothing outstanding but no response from FNB... and my account is still not closed. I am a premier client so this is the wonderful service I have been receiving! So disappointing and no one has any desire to try and assist. Oh and on a side note I have R300 in ebucks available but no mention of what happens to that when my account is closed?!? They are fighting over R113 which I allegedly owe but can’t show me a statement but forget about the ebucks! This is exactly why I am closing all my accounts, worst service ever!