Worst store to shop at

Worst experience. I was busy query with price charged with a manager when the fool that checks your till slip against content of your trolley tells me go stand outside. I am trying to tell the idiot that I'm holding the managers calculator and we looking at the overcharge but she's too dumb to hear me. It's a disgrace the customers are treated so badly. Use to shop weekly here but not any more.Xoli is her name. She then proceeded to mock me and treat me like a misfit. Giggling and talking about me to others.. I want to know what that store intends to do about this.