Please please please random older dude at the mall please don't talk to me

I was leaving and this older guy was just shouting at me. He was saying stuff like bye bye. Bye have a nice day. I tried getting into my car quickly but the door was still locked because the dumb keyfab wasnt working right and he said it's locked. I finally got it to work and im just sitting in my car.

Wtf is wrong with people