Long and varying excuses about a delay in withdrawals are a common sign that your money will never come back.
It's time for you to contact the CFTC and the FBI to see what they have to say about all of this.
Between anti-terrorism laws and anti-money laundering laws, the US government can intercept or freeze just about anything involving a US bank.
Of course, that could just be a convenient excuse. Demand a copy of the wire transfer documents and take them to your bank to verify that they are real.