criminal energy scammers with Indian call center

I'm so fed up with this repeated and totally unsolicited..Energy competitor calls. I'm on every Do NOT Call Listing..for my cell phone and my landline, too. Another phone number that I just blocked and reported...You notice..it's so important..that they call repeatedly and NEVER leave a voice mail message! A HUGE INTERRUPTION!

Unwelcome call on my unlisted land line @1:55 p.m. on 3/31/2016, There was no message left. I hate running to see who is calling. This is very annoying. I will block it, but really I can only block 250 calls and I keep getting 5-10 calls a day. Sometimes I delete a number from months ago only to have to re-block it. Some of them are the similar exchanges. Thank you for this site that helps us identify these spam callers.

No message, caller ID is Springfield, IL.

trying to switch electric service