I tried to cash out from an online casino. They said in order to receive my funds I need to send a 10 percent fee via bitcoin and once they review the fee my funds would be available within 5 minutes. I was trying to cash out $1000, so I sent them $100 in bitcoin. Now they say they only received 99.53 and I would have to send them $100 in one transaction to release the funds. I've research their blockchain address and they have 4 deposits to that account totaling around 180 but the account has a zero balance. As I type, rollsonic has completely deleted our text conversation with support.