Trolls on sc2 arcade

Ok so there is a guy on sc2 arcade that basically trolls. This guy has like 20 accounts, which he use them to copy other people name and troll with it. He joins lobbies to afk, no matter how much time you spend kicking his accounts he will eventually create another one to continue trolling. I tried to report him multiple times but nothing happens. Its been month like this and a lot of people is already annoyed. Is anyway i can reach someone from sc2 or battle net support to try and ban this guy?

First
https://us.forums.blizzard.com/en/sc2/
Second
There isnt a way to perma ban them. Bnet accounts are free. The arcade is free. Even if blizzard bans all the accounts, 100s more can be made.