Rob Kardashian thinks his family "betrayed" him.

Rob Kardashian

Rob Kardashian

The 28-year-old sock designer has reportedly been left upset over the family's recent discussions about the troubled star's "issue" on their reality show 'Keeping Up With The Kardashians'.

A source shared: "Rob feels betrayed that his mom and sisters discussed his issue on the last episode of 'Keeping Up With The Kardashians'.

"He's angry that his personal challenges have been minimised to mere high ratings for the show. He feels like no one understands him except Lamar [Odom; Khloe Kardashian's estranged husband]. He's deleted all the pictures off his Instagram."

Rob - who hit the headlines after posting a photograph on Instagram where he compared his sister Kim Kardashian West to the "bitch from 'Gone Girl'" - has also been left "frustrated" by what has happened and feels as though the comments made about him were just to improve ratings on the E! show.

The source added to "He's frustrated and feels like this whole weight thing on the show is like a broken record.

"It's like ratings come before him. That his family is more concerned with fame and ratings, than with his actual well being."