As with anything like this, when I'm asked, unsolicited, for personal information that I do not wish to give out, I make up outrageous and obvious lies, and repeat them with conviction.
One time I told a telemarketer for an eavstrough cleaning service that I did not need them because I live in an underground bunker. And I told a salesperson for an energy-saving door and window company that I required neither because my home was "open concept". Not believing me, he asked, "What do you do in the winter?"
I told him that I wear a coat.
