Who called from 3176770709

First there was no sound (just a bunch of people talking in the background like a call center), then they ask for my wife's first name (which she never goes by) and asks if she is there. I tell them no and while in the middle of me asking them who this is, they hang up on me. WTF?

Who is this?

2:56 pm. 4/18/2012. Indianapolis IN. someone else said ADT. i think they are right