User blog:MapleSyrupPancakes/Problem...

On Wii Sports Wiki, a user named Blaze Bro. was inserting false information and harassing me. I blocked him, but he created a second account called MamaKrabs86 and did the exact same thing. I blocked him again, but I know that he's just going to create more accounts and screw up the wiki even more. WHAT DO I DO?

(any suggestions would be great)

EDIT: 18 DECEMBER 2017 A new user joined the wiki named MikeETyson, who is also inserting false information, and seems to be the same user yet again, but I'm not sure if he is. How do I get through this?