You have missed the point. Retaliating against the 'instigator' only worsens the situation.
It's basic psychology, if the person is trolling then the last thing you should do is call attention to it because that is what they want. If you reward them for that behavior, they will want to do it more to receive that attention reward again.
And if they are not trolling then you acting hostile towards them and accusing them of something they have not done will only anger and distract them. If that happens then they are likely to waste time arguing back and forth with you, or to ignore you entirely (which is equally bad when you need them to play safer in lane or want them to come gank for you or want them to ward something for you, etc).
Seriously, if a player is pissing you off, the best thing you can do is to shut up and not address them. For so many reasons.