Dissatisfied with Nedbank service

I have a personal loan with Nedbank, and the process of applying for it is smooth and streamlined. I have however been trying to settle the account for the last 2 weeks. The assist phone in line is as much use as a chocolate teapot. I got transferred from person to person and menu, and still couldn't get help All I want is to settle the account, how can it take this long?? My email to customer feedback also received an automated reply. Going into the bank is also no help. Can it really be this difficult??