Smells very much like a Ponzi scam
Because it is and they need to be shut down.
So how did you lose $15,000 to GAWMiners?
I had $15,000 worth of hardware with them and I started asking questions and posting various proof on hashtalk and they locked my account and banned me.
I therefore gave the proof to the feds and I'm waiting until something happens.
Hmmm ... sounds like that is just a small part of the story. It doesn't ring true.
I'm assuming your hardware was hosted. If that is the case and they closed your account I'm sure they would ship your hardware to you. A phone call might be needed.