Who called from 6104987221

Received call this morning on our landline.  Caller ID said Bangor, PA so did not answer and no message left.  Called number back on my cell phone with my caller ID blocked and received message that the survey I was calling about was completed.

called 7-1-16, in the afternoon, left no message, caller ID says BANGOR PA, a local community to us.

Called 2:24pm; Caller ID listed "Bangor".

Didn't pick up; went to VM:  pre-recorded female voice promising "free cruise to the Bahamas for taking a survey..."  Same nuisance roboscam, different number!