Hang up call to my answering machine on 7-6-2012.

This call blocking software for home phones works, and is free :
http://www.phonetray.com/phonetrayfree.htm

These nuisance calls come from different numbers under the same name "ELEC".
This software can block by name ( ELEC ), so you don't need the phone number.

It will also block those calls that are "allowed by law" :
 charities, phone surveys,  political calls ( it's an election year ),
 and companies with which a consumer has done business.

I don't work for Traysoft;  just a very satisfied customer.

a woman caller from a so-called energy consultant, basically a scam.

No message - just keeps calling on a daily basis.

An Indian-sounding woman who calls herself Sophia calls me about reducing my electric bill, for some reason she knows my first name. I figured it's a scam. These guys are also breaking the law since I already put my phone number on the FTC's do not call list.