Today's shocker ... MTV wants nothing to do with disgraced "Jersey Shore" star Angelina Pivarnick for its Hurricane Sandy clean-up benefit "Restore the Shore" -- even though the rest of the "Jersey Shore" cast has been invited.
Angelina tells TMZ, she's reached out multiple times to participate in the "Restore the Shore" effort -- which airs live today -- because her friends and neighbors were badly affected by the recent storm and she wants to help ... but MTV has blown her off.
Angelina says she's already volunteered with local business owners and the Red Cross ... and she believes "Restore the Shore" is a great cause -- but tells TMZ, "I remain uninvited to participate ... even after attempts to contact the organizers by my management team."
Angelina calls the rebuff a "sore reminder of how I have been treated in the past" -- and adds, "This is a time where they should suck it up and stand on one side of the room and let me be there. I am very hurt by this."