This number is left on my answering machine instructing me to call and get the information on a lawsuit filed against me by the IRS!  I don't cheat.

In their minds it's a great scheme to bilk unsuspecting receivers and without it, they'd have to think up another one. If you can do it, turn off the answering machine and hear nothing from unwanted callers besides a ringing phone. Numbers that lack any answer become a waste to call.