Next Step Living is a company that does home insulation and installs other energy-conservation measures.  They work closely with MassSave in the Boston area at least.  Mass Save offers free home energy audits and subsidizes conservation work to promote energy efficiency for MA residential properties.  If you've contacted Mass Save it may be why Next Step Living has called.

The co. did not identify themselves via caller id, which is why I looked them up here but they're bonafide company as far as I know, though.

The number is for "Next Step Living" afforable crap or something ...it is just a bunch of junk

I keep getting calls from this number - no voicemail.  I answered once and nobody was there.