I just received a call from this number on my cell phone.  When I answered, there was no one there.  I have no idea who this is or what they want.  I blocked the number on my iPhone.

Said the call was a personal business matter.  Refused to give the name of the company
Told the person to go to hell and not call back.  Blocked the number  I assume the caller is a zombie debt collector.  Also called after 9p.m.