Just need to vent a bit

Just now I had the most horrible game in the history of me playing League <.< and I just need to vent a bit about it, even if it won't make any difference. I was duoqueuing with a pal and we were teamed up with a premade of 3 (which I deduced because they were from the same club), a Tryn jungle, an Ashe adc and a support Sion and they seemed to do pretty well, in fact, apart from my toplaner friend who played Cho against a Garen, we were all winning or even.

Then it started. Tryn started to always just go for kills, sometimes even 1v2-ing them, we sometimes got 3 or 4 killed, but none of our teammates EVER pressed the advantage, no matter how good it was, only me and my bro.

While that happened, Ashe spent about half an hour in the jungle afk farming, when I tried to follow her so we could get a teamfight going she was actively trying to avoid me, just changing directions whenever I went after her, while Sion often went into 1v3 or 1v4 confrontations in the jungle, tried to stun as many enemies as possible but to no avail, and then died, and it might even have accidental if it had not happened so often.

I just don't know how to deal with this, at the end of the game Tryn said ez and that the enemy sucked (might have referred to me and my friend too though) and it is insanely obvious that they intentionally sabotaged and threw the game while doing their utmost to make it appears as if they had legitimately played and I just do not know how to deal with THIS kind of bullcrap.

Haters and flamers I can deal with, I just mute them, players who are worse than I am I try to teach something (even though I am just a silver nooblet and will probably ever be), but this kind of organized behaviour, where people form a club to ruin people's games while making it appear as if they had legitimately played just makes me so insanely damn angry, and I think I have never been this frustrated since I started playing League.

And yes, I did report them, I just hope Riot can see through their scheme...