I got a call twice from this number without leaving message. The caller ID shown: NAME NOT FOUND.

They call, don't speak, I report them to Do Not Call.....

I didn't recognize the number, so I didn't answer. The caller left no message on my voicemail.

Caller ID:  South San Francisco Bay Area
Caller left no message.

What legitimate caller will have a vague caller ID that says South San Francisco Bay Area?

I do not recognize the phone number, so I have blocked it.

As always, I am tired of this BS.

408-178-5522 called today,  claiming to be "furnace Inspection".
I asked them why their caller I.D. was spoofed?  They hung up.
Be careful, for all I know they come to "inspect" if the house is worth robbing.
a few days ago got a call from 408-187-2255, no msg left. I suspect it is the same people.