There is no such area code as "666". It used to be the area code for Reeves, LA but was ditched back in 2007.

This is (more than likely) just another number "spoofed" number used by those overseas payday loan debt collection scammers. I wouldn't bother calling "Mr. Johnson" back...especially since he has already threatened you.

I was told to call back or I would be really messed up his name was hugh johnson that was the number on the voice mail. the number came up as 0000