Overdraft Disputes

In June 2014 i have raised disputes with FNB regarding an overdraft on my account. That i have no idea about the overdraft. I have raised several concern with FNB to investigate the what happen and all i got is short cut explanation that i have signed the contract. They overlooked the investigation on agent the opened the account and other concern i have raised. all i am getting from FNB is being over charged. I wanted to close my account but is all allowing me due this Overdraft that i no idea where is coming from.<br> <br> I hope FNB will do the proper investigation with this regards. As it is frustrating as customer for not given fair investigation.<br> <br> Regards<br> Brian