Could be a collection agency bcuz, they have been calling me for several months now and i have no idea why. But when i changed phone numbers 6 yrs ago i started getting all kinds of collection calls for someone with the first name Stacie/Stacey/Stacy (spelling) and surname Scott, and I'm  still getting the calls 2day bcuz she keeps using my number as her number, which it must of been hers prior to 6 yrs ago.
So i think this number is some kind of collection agency bcuz some of the calls i get, they do leave a callback message!