Appalled by service of Nedbank callcentre

I am absolutely disgusted in the level of service from numerous agents in the Nedbank contact center! I was trying to activate my cellphone banking (cannot go in to the branch as I work and they close early). Upon the initial call the agent very nonchalantly asked me questions and i was not aware that it was for authentication purposes. I did not have my profile number at the time and after searching managed to find it. I then called back and spoke an agent that address me in a very condescending manner and i then asked to speak to the manager. After being placed on hold approximately 30 mins because the manager was supposedly on another escalation the call was dropped! I am a very upset customer and want this to be resolved ASAP!!! I am most definitely closing my cheque and credit card and will advise all my friends and family to do the same. Would NOT recommend Nedbank to anyone!