The only obvious thing to me is that the Do Not Call list doesn't work. I  have never gotten so many scam calls. Got this one and five others today.

Called our DNC registered landline on 12/12/2014 @ 12:38 PM Ridgway, CO. Caller ID shows (970) 316-7049 twice. No message was left.
I've been getting pain cream and medic alert calls for about 4 months from several dozen numbers.
I have Blacklisted this number. If this number calls again it will be registered to Caller ID history, but the phone will never ring.

I've also been getting "pain cream" and "medic alert" calls too numerous to mention over the past 6 months.  Since the government, namely the FCC, isn't going to do anything about these scams, you have no choice but to buy an effective call blocking system.  I spent $40 for one about 4 months ago, and have not been disappointed!!  This call from 570-316-7049 rang my landline phone today, but it will now be "black listed" never to ring my phone again.

No one on line when I answered.  So annoying!!!!

Came in identified as DRECOMMENDED.  Left no message.  Blocked from here on out.