Just got a call from this North Carolina Call (i.e. cell phone) and they did leave a message BUT their message started before the end of my outgoing message, so all I heard of the message was
"...security system in exchange for putting a small sign in your yard. Would you be interested in getting a free security system?"
They called at 12:41 p.m. today and it's the only time they have ever called my residence and I missed the call, so I called back and it was a pre-recorded message they did not state who they were but they give you the option to be removed by pressing 9 at the end of the pre-recorded message. I did press nine and I will update in a couple days to see if it worked.
Thanks for the heads up on this number. I received a few calls in the past. Added to call block and they will get a message, "This number has been disconnected", via Ooma.