I have a habit of cursing an entire boiler room, and hopefully even the cells in their bodies will throw up from listening to the curses. Sharp curses tend to affect the future generation of these callers. Due to the intensity of these curses, a mutated caller would end up creating a far worse mutated offspring BUT the offsprings will be so disabled that they won't be to operate a computer like their screwed up mommy's and daddy's.
I actually followed the prompt to get to a person. When I asked the name of the company that had called me she promptly hung up. For what it's worth, I always report a DO NOT CALL violation each and every time........