i got threatened in the last match by an ADC player because he died often and i was support and could not help to prevent that twice.
After i warned him that i will leave lane and support someone else if he didn't stop flaming and insulting me, i finally left lane and went to top because the toplaner was afk.
The ADC then threatened me to kill my father and gun him down.
I want to report this severe case not just ingame cause i know that a lot of the ban system is automated and maybe even file a lawsuit against him, what do i have to do?
Please Riot respond.