Who called from 3128095249

They called my home # today, and did not leave a name or number on the voice mail; The only audible message was a brief, "chuckle".

I don't want to receive any call or message from this phone number (312 759 5239). None of my bussiness!

This is a private company in Chicago that conducts surveys for other organizations (like the National Science Foundation).

Nat'l Science Foundation--survey of PhD recipients

Don't answer this number
they are secretive about what they want or who they want to speak to.
Say they are from the University of Chicago