Treated like some kind of a nonsense

Yesterday I went to Woolworths waterfall mall in rustenburg to update my FICA papers for my credit card.I did not have the proof of residents but I knew I have gave it in 3 to 4 weeks back.when I got there the teller who did not have a name batch called a supervisor to tell her about my problem. She gave me a look as if she is irritated and told me old FICA papers are in archives and its going to be difficult to look for it.she went and continued what she was doing ,she was punchering some papers then after some time she went to the computer as if she is checking something.the same teller left me at the till and went to her and I could hear her saying please don't start with me and they laughed.the cashier came back and told me to move aside she want to help customers. As if I am a houses.