Got a call from them and decided not to pick up because it is an unidentified number. I don't pick up if I don't know the number but it is good to know where it came from.
Have gotten 4 phone calls from this number - 2 on 1/15/13, 1 on 1/6 and so far 1 on 1/17. My caller ID shows "Elec". Of course I never answer. Will try to remember to call this number back after 11 PM tonight when no one should be answering any incoming calls and see if I can find out who it is and whether it will allow me to remove my phone number from their system.