Nigeria money scams, I need help?

Call your bank immediately to tell them you've been scammed and ask them to freeze your acct and give you a new acct nr. How was the money deposited? By wire transfer? Or did you actually deposit a money order? Either way, you have been scammed. If it was a money order, it was counterfeit and it takes 3-4 weeks for the bank to discover. If it was a wire transfer, that came from the account of the last person to fall for this scam who gave their acct nr, who won't discover the loss until they check their balance, which might not be until they get their statement next month. But in either case, that $900 will be debited from your acct. Also call the police or local FBI field office and ask their advice. Be sure to keep all emails, letters, etc you have from this person so they can track them if they are at least in the country.