I worked a bar in college and there were about four salesmen from a local car dealership that came in for happy hour almost every day. I was nice to them cuz they tipped well but they were all pigs in my mind.
One day I refused to go on a date with one of them; he was late 40's, I was 22. He was also an asshole and asked me out on a date daily.
He grew angry with me picked up the soda dispenser hose and sprayed me with it. All over my face, hair and down my top.
I told him to get the Eff out of the bar and told him he was never welcomed back.
He tried kissing my butt for days, somehow got my phone number and called apologizing every thirty minutes, even sent flowers to the bar.
I had never felt so disrespected in my life. I never spoke to him again, and when he came into the bar I refused to serve him. His buddies always had to buy his beer because I wouldn't sell to him (and my manager wouldn't 86 him).