Negative attitude while been served

I went to the butchery to buy meat. The man serving me started giving me nasty fatty pieces he put aside from the previous client because they were small and fatty. I refused them and I asked him to give me other types of chops which he told me with an attitude that they were more expensive. He was so irritated and started banging on the display counter and throwing the meat back . Like he wanted to beat on something to release his anger. My 3 kids were so scared and I decided to leave him and his service. I asked the other scared staff members who the manager was because I was confused too. They told me that he was the manager. He later came back to me and told me with an irritated voice that I don't know what I want. I responded that I don't want to be served by him and all the other staff members refused to serve me. The fact that all the other butchers were white and they all refused to serve me, I really felt discriminated against. It was really the worded service I have received in my life and will definitely not be able to set foot in that place. I am still scared.