I don't answer because I live in Pennsylvania and I don't know anyone from Illinois. They call me like 5 times a day though and it's super annoying. They don't leave a message or anything...I'm assuming it's someone just trying to scam people.
This # called me and left a very bad automated sounding voice mail. I do not answer the phone unless I recognize the #. Even with the "God bless" I won't call back -- sounds like a scam even though I am on the Do Not Call list.