In-Game Chat bans for responding to harassment

I am personally offended by the targeting of the League of Legends punishment system. This is an extremely negative experience and is, at least what I once thought, the type of experience that the League of Legends community is trying to prevent.

I recently played a ranked game and was unfortunate enough to have 2 people on my team intentionally feed and sit afk in the base and tell the other team "it's open, end this". These two players also harassed me and told the other team in all chat that I was the problem. This made me angry, as it would any honest person who was trying to play the game. Unfortunately I responded to them. At the end of the game, the two reported me and told the other team to report me. I was targeted by harassment, and have now been punished by the system for responding.

Before you say, "that won't happen from just one game," One of the players from the previous game was in the next game as well and continued to harass me the entire game. He sent another report and here we are.

Thank you in advance for honest responses. Also, yes, I did swear. I'm not 12 years old and I live in the real world. If dropping the f bomb is a punishable offense, then I guess I didn't realize what has happened to this community over the years.