You not thinking for your clients!!

I app**** for a temporary loan and make a mistake instead of 1000 I app**** for 7100 which was the maximum amount. When i relaised the mistake I reported the issue immediately with online bankers. I was promised that it will be attended to and I must not transact, I asked what will happen should early debit orders run since in December accounts debit early, I was advised that it will be attended to by monday. Now i receive and email that It cannot bw cancelled as I utilized the funds which I did not. I got paid on the 15th and only then I used my money,im still charged the interest for the money that I did not use. I have been with FNB since 2010 and this is how you treat me? If you dont want me as your client or if you dont valie me as a client just say so so that I can move to other banks. I want this matter resolved as soo as possible. I have debit orders that will run on the 23 and i dont want to have a shortfall.