When the ADC is being toxic so the support doesn't help in fights

Personally, I just support another lane at that point. Nobody says I have to be the ADC's slave all game.

"I will not save you"

And then the player that most deserves to be reported for toxicity is the support because PSA: Toxic ingame behavior is much worse than toxic verbal harassment. One of these two things you can prevent entirely.

Seriously, screw all of you people who upon being verbally assailed think it becomes acceptable to troll the perpetrator ingame and as a direct result begin assisting the enemy team in some way.