Reported this number to the DNC registry.
repeated calls within an hour, but no message left on message machine; if you call the number a recorded message says you can press "1" to have your number removed from future calls about their "special offers".
two calls from this same number,identified as Virgo today, 20 minutes apart. Doesn't leave message. My theory: If it's that important they will leave a message.
Female caller had a heavy German (?) accent. When I spoke I got an echo of my own voice after a 1-2 second delay. I said the connection was bad and hung up. She called back but the echo was still there. I finally understood her to say "we hear there is a diabetic living in your house." I said no and hung up again. No call back.