Who called from 7815611112

I answered, which I don't usually do, and no one was there.

unwanted call

Just got  a new Comcast land line and this 781-561-1112 number (ID shows Norwell, MA) calls twice a every day.  It leaves no message and I too once answered it and nobody was there.

same here, just another unwanted call  no ID or message left

Every day we get 1 or 2 calls from this number no answer how can we get rid of them