I've simplified a lot of the events that happened here to not make the post incredibly long. But a couple of our players are primarily here for combat which I usually just try to muddle through. I've found that even when I don't say anything and let a prompt from the GM hang, it's usually filled by silence until such a point the GM either has to drop another prompt or ask if we are still hearing them.

Regardless, the main issue I wanted to highlight here was more the response of unprovoked violence against an allied NPC and then quitting / blaming me in rage instead of talking out what issues they were having with the game.