Called my mother. Convinced her that someone had ordered a home security system for her (We had talked about it). Ended up having to cancel her credit card and reported to local police. THIS IS A SCAM!
Left a 57-second recorded message; from some scam artists called "Senior Medical Advisory." Preying on senior citizens, undoubtedly. I reported them on donotcall.gov. It doesn't seem to do much good, but if enough people do it, maybe it will show up on FTC's radar.