Walgreens Boots Alliance complaint: Security Guard showing harassing behavior

Went to walgreens on Scott to get medicine. As I left I was backing up and the security guard hit my car saying watch out even though I backed out slowly and didn’t see him. He started talking to me rudely. He said that’s what’s wrong with you black women know. I was shocked. I ask for his name and supervisor and he told me never to come back to this walgreens. All I ask was for his info and info to contact his supervisor. He told me he is his own boss and nobody will even believe me. I been coming to this walgreens for many years and I never had a bad experience until now. He called me names with foul language. I don’t know who can help me if he’s right about being his own boss and walgreens can’t do nothing because they are different companies. This the walgreens on Scott and Old Spanish trail 713 741 7323. It was between 8;50-9:10pm. I’m not 100% sure. I hope someone can help me please.