New Number
All phone numbers are recycled. No one gets rid of a number without a good reason since it a pain in the butt to notify everyone. So now you know why the former owners got rid of that number.
Caller I'd said in big letters electric bill
For that number. I hit redial . Said if you want placed on the do not call list press 1.
Anyway sounds like a scam from what others have wrote. Heck you don't dare answer the phone anymore . This is ridiculous!! Hope this helps