Re: I became victim of a fraud how do I get my money back.
why don't you just tell him straight up - it's not working and what he gave was a simply not workable, it was missing the key or whatever and you don't have access. See what he tells you. Don't be afraid. Tell him you would like to EXCHANGE it with another one.
...and if things don't look good, then you have learned the lesson hard way =( you can really not save much if things look too good to be true! as Lucid said.