See how much of what you're feeling is your stuff and not what they're saying to you. How much of what you're feeling are you feeling because it's old stuff that you believe about yourself and you're not being honest about that? A lot of times we react to people in a certain way because it reminds us of another situation from our past. They are not those other people, this situation is entirely new. So get some space around it to investigate.
And then be honest about your feelings in as kind a way as possible. Holding shit in only makes more of it in your life.
And in the end, you may find out that you were both wrong about your assumptions. And if not, if they really are just being an a-hole....which we all have the capability of.... just let them figure out their own journey. It's not your shit to carry. Don't carry the shit.