Justin Bieber: 'The X Factor USA Used Me For Ratings'

Justin Bieber has been complaining that he was "used" by producers of The X Factor USA after helping LA Reid on the Judges' Houses section of the show.

The teen idol took to Twitter after being told that last night's show focused on Demi Lovato's young adults and Simon Cowell's groups categories - with Reid's over 25s getting relatively little air time.

Biebs tweeted: "Heard we got used for ratings according to twitter and we arent even on until tomorrow? @xfactorusa could of just told us."

But he wasn't dwelling on his disappointment - revealing that his fans had cheered him up.

He continued: "About to see my fans...my beliebers...and it's gonna BE ALRIGHT. #showtime #CANADA."

The star yesterday slammed a thief who stole a camera and phone containing his "personal footage".

CHECK OUT PICS OF BRITNEY, DEMI & MORE FROM THE X FACTOR USA 2012 HERE!