Worst Service and Not full disclosure

I thought FNB was a good bank, so I moved all my banking to them when I started working. Was happy with everything, but the **** hit the fan the moment I app**** for my credit card, which took more than 5 days to be delivered. As I have it 55 days interest free, apparently not for interest bearing transactions (if I knew this I would not have done IBT's), so I was charged almost R500 interest. After calling my premier banker a FEW times, my query was escalated only to tell me that they will not reverse the interest because of this and that excuse, so I decided to move my banking and started with the credit card account closure. Now that I requested for my cheque account closure, someone woke up and asked why. After explaing to them my whole story an apparent investigation was lodged for bad service. I dont care for this investigation. I want my R500 wrongly charged interest back and I want my account to be closed. If I close my cheque account now I know I can write it off. Tired of fighting with FNB, but definately know I will NEVER recommend them to anyone. Premier banking my ****. I dont even have enough characters left to say in detail everything that FNB did wrong or handled wr