Gotten a few calls from this number over the last few weeks to my celphone. Information says its a landline from Westminster, MA.  When I call it back it says "this number is not in service, goodbye". Then hangs up. What gives? Who is this? Some ghost caller?

Received the call on my cell and didn't answer, called back and they asked for the # that was called and after I gave them the # they called they asked for another persons name and when they mentioned it, it was no one I knew.  Possible debt collector.