I watched it , thinking it was going to be extremely disturbing...I want to see a movie so scary that I'll have to sleep with nightlights for the rest of my life...

Any reccomendations on a really disturbing movie I can watch?

The Jasons, Hellraiser, Freddy, Hannibal, Exorcist, Aliens..etc..just didn't cut it...Good movies...just need something to scare the bajeezes out of me..