Rude Cashier

I had a bad experience at Edgars trade route mall. I was assisted by a cashier, her name is Qeeneth Dlamini. She was rude to me on Sunday 01/09/2019. I asked her which language should I use to address her, English or Zulu, she answered by asking me "Do I look like I speak Zulu". She said am I asking so that I can gossip about her. I told her I'm more comfortable speaking Zulu than English that's the only reason I was asking.