Poor Service, Nedbank.

I received an email from Nedbank, saying they are going to freeze my account next week, because FICA details are wrong. I called the helpdesk to explain that I I've banked with Nedbank for years and they have my details. The woman I spoke to says I have a Private Banking account (I've never opened a Private Banking account) that has an issue. She says there is no FICA issue with my 'normal' account. ***. I said I'm unable to get to the branch by Monday, and I asked her to log a complaint. She says she can't log a complaint. I must come to the branch or they will freeze my account. Hard to believe a company can treat long-term clients like this. What if I was away on holiday? Unbelievable.