Is it possible to report a player?

Hello. I want to let you know about a problem with one player in the European region. This player has over 90k games in his experience and his main goal is to entice another players to play, port their gameplay and make it impossible for them to play normally. I play mostly 3v3 games in ranked matches. I play almost every day, and I see this player every day. Every day he plays tens games, and almost all the games I see with him, he intends to ruin the game for his allies. He either starts an attack on his allies’ main structure with first workers, or kills his own base and then starts an attack on his allies, or places a building on his allies’ mineral lines, making it impossible to transport minerals, or at best just does not play, while remaining in the game. He can also attack his allies in the middle of the game. This also comes from constant swearing and insults in the chat during the game.

He intends to ruin the game for other players, playing a lot of games, many many games every day. And this really hinders me and my friends from playing, enjoying the games and moving up the ladder.

I can prove to you his actions, such as such game replays. Numerous complaints in the game from me and my friends did not lead to any result. I think, players like this have no place in our favorite game, and I kindly ask you to take action about him and his account.

Thank you.