VERY VERY RUDE!!!

On the 30th June I went to Northgate branch to unblock my account, I went to Mary Ann as I was supposed to be next at the que ,when I got to the counter she looked at me and say why are u standing here and staring at me like that? Then I said because you must assist me, then she started screaming at me go sit down I'm about to leave ,I looked at her and said do not shout at me, and her colleagues came to her and beg her to come down and stop screaming at the client, then I said why u so rude u don't have to shout at me then she said of course I am rude what are u going to do about it, I just left on the 1 July I went back to speak to her manager the lady told me they don't have a manager I must fill the form they will fax it to the head office, she saw me and still gave me a dirty look to show me she doesn't care or regret what she did to me, please the service like this is not acceptable I've been with Nedbank for years I never meet a rude consultant like her please do something about her .