Who called from 4194818149

Rec'd call from the above number.  Caller left no message and I called back it stated that number was not in database.  Reporting this call

This number has been calling me three times a day for the past 4 days and has not left a single message. So irritating.

The caller called twice and i recently recieved a threat on fb im paranoid right now

This number is blowing up my phone 4 times today - I have it blocked but it keeps trying to get through - I haven't called them back

Comes up as NFO RESEARCH INC - whatever that is