Occasionally, when retired life gets boring, I like to play little games, to see who (cops?) pops up.  I, basically invite email that no one would want.  My methods are my own.  I don't/won't reveal them on ANY forum.  Been a very good while since I've had one that was surprising, even had a facebook page.  
 
Getting a call out of the clear blue sky, however, is a different story.  I knew of a KC cop who would send emails to people out of the blue.  No doubt, you did the right thing!  

    You had your big head screwed on right!  It is a good thing to pass on your suspicions, a lot here would not, just let it go!