Caller ID said Bothell, WA. "Senior Medical Advisory" left a 43 second message. Opens with American Heart / Diabetes Associations' recommendation for seniors getting a home medical alert system. This one is free. Press 1 for more info, 5 to be removed from caller list. I googled their & found this same "Advisory" group is calling from different numbers all over the US leaving same message.
I never answer an unrecognized or blocked or unknown caller, ever. Added the number to my address book contact for "SPAM" which now has 25 different numbers. And like most everyone, my number's on the Do Not Call list.
Caller, "John" sounds like a real person, but is recorded. He says he is trying to schedule a medical alert system in our home, free system, free delivery, free setup. Hit 1 to schedule setup. Call comes in almost every night around 6:20, DST.