DON`T mess with JUSTIN BIEBER.

The teen titan has wreaked vengeance on a hacker who leaked his phone number online.

Michigan-based Kevin Kristopik broke into JB`s social media accounts and leaked his digits earlier this week.

But the cunning little fella hit back by unearthing Kev`s number and posting it for his 4.5million followers to see.

He claimed they were his own and invited fans to ring him.

Justin wrote: "Everyone call me 248-(Kristopik`s number) or text."

He took the post down within minutes but Kevin`s line had already been jammed with calls.

Kevin later Tweeted: "@justinbieber is a d***".
sections: Celebrities