This number has been calling repeatedly for a few days now. Xfinity says it can't be screened. Pick up the phone - no answer. It shows up with a "1" in front making it maybe an international call.
Get calls from this number many times per day, and let it go to voicemail, but no message is ever left. Tried calling back using *67, and got a message that said "We're sorry, your call did not go through. Please try and call again."