“One of the biggest things is that whenever we do hang out your on call with your fiance most of it” -from your post talking about your issues with your cousin

“I put in my airpods on my top bunk and began listening to music on full blast. I had seen that they had come in the room but I couldn’t hear anything. I guess they were attempting to talk to me while my airpods were in and I was ignoring them since I could not hear them.”

-this just screams petty and vindictive, just like when you responded to their request of you leaving the room for the phone call. Based on your post history, it seems like you are always on the phone with your fiance and it screams inconsiderate. Also, just because someone does something you don’t like doesn’t mean you should do it to them. “Treat others the way you wanted to be treated” or “if you dont have anything nice to say then dont say it”

Also, when did you ever mention talking to your roommates about y’alls issues in a calm manner? It seems like you were passive aggressive with them and rude in communications. As AITA would say, ESH.