As stated above, a home security company (or so they say)
At first it's a recording explaining that they are going to be in the are and how important home security is...
I pressed "1" to speak to a representative, and promptly asked to be removed from his caller list, as I am on the do not call list. He hung up without saying a word.
Illegal unsolicited call to my cell phone. Offered a "free home security system". Obviously a scam. I pressed "0" while the message was playing and they caller disconnected.
Called my cell phone, offered to install alarm system for free. I pressed 1 to be put on do-not-call list, but got disconnected immediately after pressing 1.