Received a call from 706-208-9178, caller ID not given (UNAVAILABLE).  Caller claimed to be representing natural gas producers.  First asked what state I lived in.  Then asked to know, in a broad range, my income and net worth.  At that point I told them that I do not give out such information, and I hung up.  I strongly suspect that the caller was a scammer and that the number was spoofed.