There's a guy in a different department at work that I interact with occasionally, and everytime I do he's an utter asshole. He works closely with people I work closely with which means that I'll need to talk to him/get help sometimes, and when I do he will 100% of the time say "Oh, are you an (XXX Role) now? When did that happen?" in a really agressive tone and then bitch about whatever it is I'm asking about. I just ignore it right now, but that isn't really satisfying. How do y'all normally handle work assholes?