Caller inadvertently left a partial message "will take 5-7 minutes" so probably was an automated survey of some kind.

I got the call. Answered and heard a recording saying "7 minutes" then disconnected

Got a call, but I didn't answer it and they didn't leave a message either.

Robo-caller left this voice mail message:  "Hello.  This an automated public survey from "For a Better Chicago."  We'd like to ask you a few short questions about your opinion on education in the city of Chicago.  This survey will take approximately five to seven minutes."  [click]

Of course, the lady mispronounced shi-CAW-go.  She said shi-CAH-go -- which drives me crazy.  If you're going to do a survey about it, why can't you learn how to say it correctly?

"For a Better Chicago" seems to be a PAC (political action committee).  The survey questions can be found here:  http://www.forabetterchicago.org/

This is a company that is among those that are exempt from the government's Do Not Call list which "include organizations engaged in political solicitations or surveys."

I hate PACs!

When they called last month, I added them to my phone book as "Survey" and so did not bother to answer when they called back yesterday.  

If you call them back, you won't be able to speak to a live person.  I guess the only way to get on their do not call list is to go to their website and send them an email.  

Sadly, these "survey" calls are legal.  However, once you tell them to stop calling, they cannot call you again.  If they do, they can be reported to the donotcall.gov website.