I also got this call. The CID said it was RNALARMS. I suspect it's just a new number for the Medic Alert scam or they are selling burgler alarms, either of which is illegal since I don't do business with any such company and am on the DNC list.
Security system sales. They said someone would be in my area and I qualified for a new alarm system. I spoke in a deep monotone voice and she was kinda of weirded out. Eventually she apologized for bothering me and said goodbye.
RNALARMS has called me repeatedly trying to sell me a security system. I tell them to stop calling me but they continue to do so even though I'm on the Do Not Call List. I'm reporting them to ftc.gov as soon as I'm done here.