I get this question all the time, and my answer is always the same: don’t try to win. As soon as we engage in this win / lose mentality, we abandon our hearts and forget what’s really important: vulnerability and love.
Yes, absolutely you should go no contact, but it should be from the perspective of self-love, not “winning”. As long as we maintain this false illusion of control, we’re still connected to the person in our psyches. A lot of times, sociopaths go no contact with us, and we sit there wishing the person would make contact, just so we could be the ones to ignore them (or reply with some cool quip showing how much we don’t care). A hallmark of C-PTSD is fantasizing about gaining some power over an otherwise powerless situation.