This is a scam targeting PG&E and other utilities' customers and attempting to market substandard, if not actually dangerous solar installations.

"Unknown Name"
left no message
blocked now

Got 2 calls from this number and I have asked to be taken off the list before.  Now I am getting mad.  When you cakk the number back, you get a message thhay the phone number has been disconnected.  

How are these people getting around the do not call list? I'm bombarded with calls from the South Bay.

The DNC list does not automatically block calls.  Instead, it provides a list of  "do not call" phone numbers to legitimate telemarketers who pay a fee for the list.

The DNC list exempts political callers, survey organizations,  charities and companies with preexisting business relationships, but these organizations might have their own, internal Do Not Call list (ask them).

The DNC list  is not effective against criminals, spammers and scammers, because those people do not subscribe to the DNC list, and do not care if you are on or off that list.
Its purpose is to stop calls from legitimate telemarketers, and it does a pretty good job at that.  Just think ... if there were no DNC, you would be receiving incessant telemarketing calls from BOTH legitimate and scam callers!

Here is your reading assignment:
https://www.donotcall.gov/
http://www.ftc.gov/news-events/media-resource ... try/enforcement

Remember, the Do Not Call site is a good one to report unwanted calls from LEGITIMATE telemarketers.  The DNC list does not cover calls from criminal scammers & spammers.  To report those, visit https://www.ftccomplaintassistant.gov/

If you receive calls even after reporting them (and waiting a sufficient time), then you should consider using a call blocker app, device or service as your first line of defense.  Google "call blocker" to see such things at Amazon or other sites.
http://gg.gg/blockers