Worst experience ever

Had a student account where my salary was being paid into and without any prior notification my account was frozen because I had to open a new current account. I now sit with a salary that I cant access and my account can only be unfrozen once all documents are verified for a new account. Do not see how a bank has the right to freeze an account without prior notice. Its been a week now and staff are really *********** and unconsidered. Regretting the fact that I banked with Nedbank in the first place.