Why should I be punished?

I have moved this here after receiving a notification that this is the place to post this subject.

 After just finishing a ranked match where we lost because one of our teammates decided to troll for not getting to play mid. I hop into another ranked match. After all last match, was last match and I was in my promos. Unfortunately I came across this player who makes the claim that they are on another persons account and are trying to die as much as possible hoping to get to 50 deaths. So I am now forced to decide between trying to play it out and hope I can do enough to win my promo, or dodge and save myself 20 minutes of frustration. After comments like what is in the picture, I decided to dodge and save myself some grief.

 So I dodge the match and wait the 6 minutes or so before I try again, only to find out that I have been forced to lose my last match because of my dodge, and dropped down to 77 LP. I do not understand how this is fair game play. By saving myself and the teammates who are trying to play a legit match in League of Legends from a player looking to grief others, I am punished. Why?

 I am not looking to have my stuff put back to what it was before I left, instead I would like for Riot to consider, and implement any of my suggestions for the future, or find ways that do not punish the

 My first suggestion is reduce the severity of leaving during a promotion series match DURING champion select, by no longer making it an automatic loss and to not reduce League Points for the player who left . Instead I would like to see that if a player who was in their promos leaves a game then they should get penalized with a wait time. The wait time should start at double the normal time for the first offense and doubling each time per offense during a 48 hour time frame. This should still prevent players from constantly leaving matches to "farm" champion select if it does not go their way. In fact, I would rather someone leave champ select and wait another 5 minutes to start my match, than have a team of 4 spend 20 minutes in frustration because of 1 toxic person.

 Which brings me to my next suggestion, reduce the time it takes to allow a team to surrender to 5 minutes. This way if a team decides to try and play it out, they have an option to save themselves 20 minutes of their life from playing a match they are no longer invested in playing when a toxic person decides to grief. Because they actually started the match, they will face the normal effects of surrendering a match. I believe this option will also have the benefit of keeping stress levels of players to a lower amount as they will not feel forced to play a match with a toxic person for 20 minutes, and within about 10 minutes they could be back on Summoners rift with a more cohesive team.

 I believe that by implementing one or both of these will remove the lose, lose situation that players are experiencing while playing the game, and will keep players stress to how they are playing, and not what other player they are FORCED to play with.

 For my previous topic, I was not trying to call out a specific player, especially since one of the comments they made was that they where on someone elses account, but rather to show that is was the same person who made those comments.

As for the response I got about my first topic.

"From: Riot Games Hey Anomandarist,

We understand that you want to get word out about this player and their in-game behaviors but this is not the correct avenue to get attention on them. Please continue to use our in-game reporting system to put these players through our behavioral systems."

 My issue with the bold portion is that I left the match at champion select, how am I supposed to report a player for toxic behavior before a match if the current system means I have to waste 20 minutes of my time playing a match just to report someone?

 The issue is not that the player was being toxic, the issue is that by dodging a match to avoid a toxic player, I am severely punished with an automatic loss on my promos.