Don, this type of behavior surprises you? We have evolved to a state in which so many ignore any sense of decency....but these tactics must work, because they keep using them - phone calls, spam email, pop-up ads, direct mail - so I don't think they are going away soon...after all, there really IS a sucker born every minute.
Here are a couiple of tips we use:
Unwanted phone solicitations - no matter who in the family answers, we say - "That person moved out on us - took off...left." and offer to tell the whole sad story. We hear, "click."
Any mail that does not have a first class stamp is junk...it is tossed unopened.