This number called several times.

Received call from 314-342-3310 on Thursday 9/29/16.  Caller ID "out of area".  Didn't answer, I never answer calls from numbers that I don't recognize and that do not display a legitimate name.  Voice mail was left saying it's Laclede Gas Company doing a natural gas safety survey and they'll call back.  Will not answer then, either.

Received about six calls in the last couple days from this number.  Caller ID says "Unknown Name".  Message left saying it was Laclede Gas about a survey.  I doubt it.  They say they will call back, and they do...relentlessly.