called as me about  savings on my utility bill... cold caller out of kearny, NJ

They called me yesterday and again today but yesterday I was silent and today I missed the call I was busy. I don't know if I should be worried if they could be tapping my phone because I answer yesterday. From Kearny NJ was also on the screen when they called.

This number has been calling me CONSTANTLY over the past three weeks.  The one time I picked it up, the person on the other line asked for the person in my family who is in charge of the electric bill.  I have gotten at least ten calls from this number, to the point where I've had to block it from my phone because it's such a nuisance.

Caller ID for this number on my landline said "Positive Energy"..