Pathetic service from Nedbank

I have an account with Nedbank and submitted my FICA documents 3 weeks ago after account was frozen without notice. The account is a cross border account and I actually wanted to regularize it after I got a work permit and a job. But, alas, after visiting a branch for that request my account was frozen with substantial amount of money in it. I have numerous times contacted my relationship manager to help me but to no avail. Either he is on sick leave or out of office and whoever steps in for him does not respond to emails. I have contacted Nedbank complaints center and they are of no help either. My only last hope is the ombuds.