Answered call because we thought it was a familiar number. Man said he was calling about the notice that was included in our Nicor Bill. I told him this is a scam call and he best not call again. Call came from town where we have rental property and they don't have Nicor service.
Called me this morning saying they were my gas company. I played along just for fun, then he said I needed to get my gas bill and that he'd wait as long as I needed to find it. So I had more fun, and let him wait and wait and wait until he finally hung up!