They call many times a week asking for the person who handles the electric bill. I put them on hold for 5 minutes then hang up on them. Just as bad as Direct Energy who walks in the door and asks to see our electric bill, now I just tell them to leave.
They call just about every day now. After being polite and saying no thanks several times, they still call and leave a msg. now on the voicemail. They have just been added to the blocked list. Do Not Call List does not seem to be working for these folks.