Caller with no name on Caller ID.  Did not answer and they left no message!!!  Likely some scam!  A 1-16-16 incident.

Man claiming to be from Comcast asked for my husband.  When I said he was unavailable, he asked if I was authorized account holder.  I said "no" so he said he would try to contact my husband another time.  This is not a Comcast/Xfinity phone number

Scammers. Fake Comcast number. Don't bother answering. Just block it and move on.

Left no message. Blocked this number.

Had a call from this number, didn't answer, but they did leave a message saying it was Comcast and to call them back at 877-213-3923 to go over some new rates and plans they had.  Called the number back they gave me from another phone and it was a Comcast number.  Not interested in changing my plan or anything, so I hung up, but seems legit, although unwanted.