Frozen Account without Notice

Nedbank has frozen my account. I did not receive any notification that this account was being frozen and when I urgently needed the funds I had saved for emergencies, I was unable to access these funds. I was also not informed upon opening the account that I had to transact on it regularly to keep it active. Upon phoning, I was told that I had to go to a branch to unblock it which was another inconvenience as I could not get to the bank that day and as a result could still not access the funds I needed urgently. When I did manage to get to a branch, I was told that it had to be authorized and that they would contact me as soon as this has been done and it will be done before the end of the day. It is now 8:30pm and I still have not heard from the bank and I also still cannot access the funds I urgently need. I am deeply disappointing in the service I have received from Nedbank in my time of need and they certainly were not willing to help at all.