Sick & tired

We would like to know when FNB will be closing a check account that has been settled in January?!<br> <br> An amount was agreed on and paid the same day (12/01/2015). The account still hasn't been closed and since then intrest and account fees have been charged?!<br> <br> If this isn't settled before 20/04/2015, we will move my wife's credit card and check card to another bank.<br> <br> This is very very bad service!!!!! Please check payments on account and settlement letters dated 09/01/2015.