I just received a call from this number as well. I was outside and there was a hang-up on my voice mail...

Thank you!

Called on my work phone (I work from home) which is registered on the do not call list, and when I answered (clearly identifying my place of business) there was no response, but then a man, who sounded as if he was slurring his words asked to speak to the person in charge of paying the electric bills at (insert my address).  I asked him not to call again as this was my work phone.  So sick of these calls!