That was good - I'll have to remember that tactic.
I recently had to change my home number after having it for nearly 2 years. There were collection agencies calling for the former owner of the number. We thought it would eventually end - but it just got continually worse. After the first year we tracked down the woman who had it via a simple internet seach and found that her home was on the market due to foreclosure due to the fact that she had been deceased for several years, and the home had finally gone up on probate sale. (CA law says you need to list who and how they died if in the home.) Try telling a collection agent that.... They call more... Whats worse is they pull little scams like saying that they are calling about a medical appointment she supposedly made. Finally had to change the number... Swear, if there were a tower to get a clear view at some telemarketers and or collection agents I would be tempted. Alternately - Giving them a dose of thier own would be very satisfying...
