Who called from 4150000204

This number (415) 000-0204 called. Caller ID: Name unavailable. Left no msg.

They call me more then 3 times a DAY, I dont answer but they dont let msg. where is this number ??

Calls often.  I don't answer because the number looks suspicious.  They never leave a message.

They keep calling almost everyday, but never left a message. Calling back, the call cannot be completed. It is very annoying. Is there any way to block it?

I have been getting calls from this number twice a day for the last couple days. It's a strange number that is obviously spam. I will try to block it, although I doubt it will work, as the number is not a real number to begin with.