The cashier refused to help me

Th cashier who was on duty last night was extremely rude to me for nothing.I wanted to witdraw money in the Standard Bank ATM inside the Garage and then buy some Airtime and bread.It was around 22:00 pm and I assume that they were closed because she opened the small window and told me to go to the Nedbank ATM outside if I wanted to withdraw cash.It is the manner in which she spoke to me that I don't like,she was extremely rude.I asked her to speak to me politely and not to give me attitude,that's when she told me that she was not going to help me.She said \Here is a manager's number