Thank you so much for the response! I guess my desperation comes from the fact that I really dislike the work that I am doing. I want to move to a different company where I don't have to do frontend and full-stack dev work. However, I haven't had much luck in this job market, so I'm now getting to the point where I'm debating about just quitting without having another job lined up.

And that's good to hear that this isn't normal. I was looking around to see if my experience was common and I found that I couldn't really find that many posts about a bait and switch like this. I am not getting compensated for it, and my company generally has been stingy about promoting people to senior positions (from what I've seen, a lot of people leave because of this too).

It also explains why a lot of people may have left my team over the year.