If the story is true then that is a pretty dumb decision for you to make.
No one in the right mind will send $9000 to a completely unknown stranger also knowing the fact that you are dealing with an anonymous cryptocurrency. You could have at least broken the transactions into several increments and have waited for every time the other user sends you the equivalent money.
Well, no one in this forum will be able to help you now. Also forget thinking of someone donating you for your dumb decision.
Maybe karma caught you this time I guess.
