Something similar happened to me. I withdrew funds from FT and they deposited it twice into my Neteller account. I kept it. Although, about a month later they sent me an email saying they made an error and requested that I redeposit the funds so they can take the money back. So far, I have ignored the email, but unfortunately, I can't play for money on FT since if I make a deposit, they are likely to take the money I put in. Bastards.