443-550-7985 has been calling. Won't leave a message.  Can't figure out who they are.

National Cancer Coalition - They are trying to raise money.

Another reporting site does also have a blog entry from someone who found this is the National Cancer Coalition.  Googling shows that it is a non-profit that is of some question whether it does indeed hlp cancer victims...
411.com reports:
"Type:Land Line,
Provider:Cavalier Telephone
Location:Northbeach,MD"
Again, another instance of our taxpayer funded government run amuck and failing to keep more harrassing people out of our lives.....

I didn't answer the call.