I bought a Marine Air Horn, and when directed to "press '1' ", I gladly do so , wait until someone comes on then line, I draw them in a little bit, and then blast the air horn, laugh at them, and then I hang up. Very satisfying.
Also, set your answering machine to answer at 6 rings instead of 4 - they NEVER wait past 4 rings.
LOVE IT!!! I recorded a televangelist on my DVR form an hour and if I call any of them back (after hitting *67 so my number is blocked!) that really are persistent or nasty, I blast this wacko preaching about the "second coming and eternal damnation for the unrighteous" into the phone!!! I got one company so angry...after I called them five times in ten minutes…that they started screaming that "I needed alive life and to STOP CALLING!!!" in to the phone!!! BEST TEN MINUTES I EVER SPENT ON THE PHONE!!! Seriously though?! This is what we're reduced to?!?! LOL