Deleting Facebook and Twitter

Now I'm to the point where I'm basically begging these two (Facebook and Twitter) to just delete my account :-)
Never did anything to deserve being treated this way (you see on here examples of what I post, I don't threaten, spam, harass people, etc-like I said, I rarely even curse :-)
But just tired of it all, and want them to delete it (wonder how long that will take? :-)
Does anyone know?