is elitism really the right word? it sounds like you're mad at something and using the word "elitist" because it's the first thing that comes to mind.
what i would suggest doing is sitting down and thinking very carefully about what has happened and what annoys you. make a list on paper if that's the way your brain works. tease out all the details and your emotions.
i would guess, if you do that, that (1) you'll see that the "elitist" part is largely emotional related to how you feel and (2) that you can actually some real problems at a lower level (like being rude, or lazy, or incorrect, or not giving credit, or whatever). once you have more detailed lower level problems you can think about how to address those.
tldr - "elitist" is an emotional "catch-all" phrase that isn't helping you or anyone else here. you need to do some work and think through in more detail what happened. once you do that you'll have a clearer idea how to continue.
tldrtldr - only once you see things clearly can you fix them.
what i would suggest doing is sitting down and thinking very carefully about what has happened and what annoys you. make a list on paper if that's the way your brain works. tease out all the details and your emotions.
i would guess, if you do that, that (1) you'll see that the "elitist" part is largely emotional related to how you feel and (2) that you can actually some real problems at a lower level (like being rude, or lazy, or incorrect, or not giving credit, or whatever). once you have more detailed lower level problems you can think about how to address those.
tldr - "elitist" is an emotional "catch-all" phrase that isn't helping you or anyone else here. you need to do some work and think through in more detail what happened. once you do that you'll have a clearer idea how to continue.
tldrtldr - only once you see things clearly can you fix them.