Worst service

Worst experience at Hungry lion kg mall, witbank, Mpumalanga. I went there to buy double dixie burger with cheese in it.... The cashier without understanding me properly, she made an order for double dixie cheese. When I tried to explain to her that she got the wrong order, she said she can't cancel the order. I went on to ask her if she always gets her orders right, she started swearing at me, threatening that if I continue to place my order she will spit on it. She was shouting and told me that I'm undermining her because she is cashier.... I don't know how that was part of the topic. Her name is Dineo