I just got a call from 323-396-9081.  They says they are representing The Hilton hotel chain?  I would be ashamed.
He said I won a 80% discount off a trip pretty much anywhere in the world and when I said I am sorry I don't have time for this now, I'm at work - he rudely said "Ya, me either" and hung up.  I would seriously consider who you are hiring to represent you.  Awful.