Didn't pay for rudeness

On Wednesday the first of May my friend and I was getting some food at steers. We ordered two wacky Wednesday meals . A guy named Nuabulo was maning the till. He asked us do we want cheese for a extra five rand each ,we both said no. When my friend and I got our till slip we looked at our change and saw that he added the cheese we did not want. We went back to the guy and asked him to take it off. He proceeded to talk to the guy next to him and make jokes about us wanting our money back for the cheese. I find this very rude and I be making sure I tell all my friends and family about this steers and how back there service is. I won't be going there anytime soon. If I could give a negative 4 star u would