Like, It's so simple. Just get to a good point. If the person is still talking shit, You can maybe bring some people in, OR just ignore them in general!
Like that's literally what I try to do, but more often than not the people i'm talking to don't want to hear what I have to calmly say, and they insist on warfare. The moment they lose is when they want to softly talk it out, which is bullshit.