and how do I react next time they don’t greet me?
I started working at this department 3 weeks ago. I went into the office I now work at, greeted 2 coworkers I’ve already worked with, they looked at me, said nothing, kept talking to themselves.
How am I supposed to interpret that?
To me this is disrespectful, maybe you disagree?
Then, as I was working, I saw both of them staring at me. What am I supposed to do when that happens? To me this signals hostility and passive aggressiveness.
I separate private life from personal one but even I know that the least you can do is to greet your coworkers, unless you want them to quit.
Your options are essentially to deal with it or ask them what’s up.
Personally I wouldn’t waste time with co-workers who are being rude.
They could be jealous of your position for some reason or taken offense to something random you did. They may just be assholes.
At the end of the day you’re there to work and if it doesn’t affect that I wouldn’t bother.
If they are increasingly hostile maybe have a quiet word with HR.