3 calls received around 7:30pm central, in succession.  First time hung up without a word, when aswered.  Second time, a man's voice came on saying "I am sorry, I have the wrong number" and immediately hung up.   The third time again, hung up without a word when answered.   When he knew he had a wrong number, why would he call the same number again?   The display on the caller ID read "Dedham Extension 781-613-9147".  When I searched on the internet, there is no record of this number anywhere.   Smells fishy!
Minutes before this, there were two other calls from 970-530-8267 and 781-326-1669, the first has been reported by many, the second has no record anywhere.