That is my most frequent approach to unwanted solicitations.Quote from Wide Tailz:
... Even better, set the phone down, walk away and let them waste their wind on the pitch that no one is listening to......
I've NEVER bought anything from ANY unsolicited caller. And NEVER will.
If it's door to door, I'll tell'em I'm not interested before they even open their mouths then firmly close the door in their face.