Called my cell and I didnt answer.  They left message and selling security system.

Just got the call about 530PM here in Albuquerque, NM.  Called back and is a disconnected U.S Cellular number.  Must be a number spoof.  Added to AutoReject list on Note 4.

Got a call from them. Spammer trying to sell some security system. I did not answer, but they still left a message on my voicemail. Not the first time neither. I have gotten this call in some form from other phone numbers as well. So much for that stupid DNC list--worthless.

Called my cell phone (on the do not call list) but did not leave a message.

Spammer.  Although I was very honored to be carefully referred to by someone I knew, I had to decline the offer and I politely told the recording that I wasn't interested.