Extremely bad client service

I had visited the Centurion Nedbank Branch on the 7th of September to apply for a R10000 overdraft facility.<br> The next day I received a response that it had been declined due to poor conduct at financial institutions and poor payment history over the last 12 months. I do not have a poor credit profile and had then provided my latest credit report to the the bank , asking them what are they talking about, convinced that they have incorrect info on my profile. This morning they have then asked me to send them proof of a settlement letter , of which I cannot make sense of . The credit department had now gone off the previous credit issues which were not true and tried to find something else to be difficult about. In the first place I cannot understand why they are requesting such info , when there is no issues on my ITC profile. I know for a fact that if I had to apply for a R40000 personal loan with Nedbank it will be approved immediately, so they can rip me off with the huge amount of interest that they charge. I have an excellent payment history with Nedbank and excellent conduct on my account.I want immediate assistance from competent people in the credit department.