player harassment with skype/cursed voice etc.

(not sure if this is in the correct section) First let me explain what happened: I lost a game against an ap Nasus and at the result screen he posted a link to his twitch; I decided to watch it since I was rather curious about ap Nasus and wanted to see how he dealt with lane phrase. Everything started out fine, he and his friend went to bot lane as Nasus and Braum support, and his other friend went to mid as Vel'koz (they are all on voice chat). At first they had a very difficult start because enemy had Cait and Sona bot lane, and ended up both dying, when they came back to lane, Nasus pushed wave to tower with e really fast since he's ap, that's when Jarven decided to gank bot with flash and e q combo to tower dive Cait and Sona (they were both at 250 hp but Sona have heal and Cait still have summoners so that's Jarven's fault), however Nasus and Braum decided to harass Jarven after this even though it's a mistake anyone could've made and said "Jarven only feeds lanes" and other very very offensive stuff and tell each other in voice chat to harass Jarven, even made top lane who isn't in their voice chat to say "Jarven don't come top", keep in mind their little circle also complained about how top is bronze and noob etc. At first Jarven fight back a little, then after several minutes of harassment he told them he will mute all of them. What happened then is this Nasus told Braum and Vel'koz to keep ping spam Jarven and even went as far as going to all tab to tell enemy to say what he wanted to say (of course they didn't bother since they don't have any idea what's going on).

Why do I care? I'm a jungle main, and this happens to me very often, before I would just mute everyone if it happens, but I read a guide from another jungle main and he said it's important to communicate with your team even if they harass you to have successful ganks and to win. So now I would try to talk to them even when people harass me. What I'm confused about is that even when sometimes someone else made trash plays and is feeding, someone else would be in their favour and blames me instead even though I had the top score in the team (just like that Jarven who was 4/3/1 when their team is all negative), after watching this stream I understood, even though it's solo queue, people bring friends with them, and end up cyber bullying because they had majorities.

What point am I trying to make? -This person I used as an example streams, which means that he plays often and isn't banned even though this definitely isn't his first time doing this. -When playing as jungle or this game entirely team work is very important, but when something like this happen you won't be having any fun playing the game at all and the experience might linger on you even after the game, so please, if you identify yourself as someone who does this, stop it. -If you have people that does this to you in a game, keep calm and imagine them to be 13 year old kids and take it as a joke, it's hard but just muting them isn't going to stop anything, they are probably going to attempt stuff such as stealing your farm or ping spam. You don't have to respond anything but make sure to report them, every single one of them so they won't poise the community any further.

sorry about the text wall tl;dr: Don't forget to report anyone that harassed you in a match, but if you responded to them with foul language you are taking the hot pot on your head, so don't bother but just remember to report them. AND BULLYING ISN'T SOMETHING YOU SHOULD FEEL FUN DOING!! NOR ANYONE WANT TO WATCH THAT BS.