Who called from 9721227878

Keep getting calls from this number, but they hang up whenever I answer.  Gotten calls from similar numbers, those with a 972 area code and a prefix starting with a '1', and they were all the same.  Answer a survey and get a free cruise to the Bahamas.

Anonymous cid.  Bogus exchange.  No such exchange as 972 122...! Do not answer as it this is a scammer call from over seas.