Dialed *67 and the number, and a recorded message says "the Google subscriber you are calling is not available". Scammer most likely.

This number called me and idk who it is. I didnt even answer it. And I don't think I should call back either...

I just received a call from 209-878-7012.  I didn't answer because I am unfamiliar with the number.  They didn't leave a message.  I called *67 then the number to hide my caller ID and up came a message that the Google customer is not available.  I think a muffled woman's voice said "home efficiency".  I was tempted to leave a vulgar message but instead I just blocked the number  with my handi dandi call blocking device from an online auction.  It cost about 40 bucks and can store 1,500 phone numbers.  I think I am up to about 120 blocked numbers.

I no longer do anything but block the numbers and not answer numbers I don't recognize.
I get about 5-8 calls a day and most of the scammers are now being blocked but new ones start up all the time.

Good luck people

Just received a call on my cell which is on the do not call list.  I answered since it is a local number to me.  Said  "hello" a couple times.  No one there so I disconnected, and then checked here. I have now saved the number as "garbage" so next time I won't bother to answer.

Claimed to be working with PG&E re: energy rebates. Listed several items they would evaluate my home for including roof, windows, attic insulation, hot water heater. Made an appointment. Came out and looked at roof. Apparently wasn't profitable enough, so the guy pretended that he had gotten an emergency callback on a previous appointment (although his phone never rang while I was with him) and would be back in 20 minutes. Never came back or called back. The guy's name is Randall "Randy" Wallace, and his cell phone number is 925-260-3777.
Read more at http://www.callercenter.com/209-878-7012.html#muIlLRMMuQC6WId7.99