unpaid items Bull******t

I am highly Frustrated customer. I have been with FNB for many years and this is the first time i am experiencing such PATHETIC SERVICE regarding my account . Firstly its regarding unpaid items to the amount of -R606 which i swiped for on the 13th of july and it went off my account however according to FNB i did have around R100 some change in my account and when the merchant decided to take the funds i was not there however it did approve when swiped so FNB decides to put my account in a minus figure mind u 600r is alot for swiping.. And what F*****n frustrates me is that when u call to query it they promise to reimburse u give u references but then say that u declined I AM CONSIDERING CHANGING MY BANK AND MOVING ALL MY FAMILY MEMBERS AWAY FROM FNB AS THIS IS TERRIBLE SERVICE AND NO ONE GETS BACK TO U ...