These [***] call everyday and 2 or 3 times a day. I have swore at them, called them names, blew an airhorn in the phone. Nothing works. They still keep calling. I tried to call the number back and it tells me that it is an invalid number. Always asking if I want to lower my electric bill. they call from all kinds of numbers too.
This is a bogus number. No exchange in North America has a leading ZERO. So the number is clearly spoofed. No good can come from answering a spoofed phone number. It's almost assuredly a criminal on the other end just waiting to rip you off!
I have programmed PHONE TRAY (the free computer call screening program) to hang up on bogus numbers, so they never bother me. I checked the call log and found I had received a call from this number earlier in the day.