So urgent actions are neded
Urgent action? Like what kind of action?
If you can make tax authorities to see if they pay taxes and investigate them. Just file some sort of complain for money wandering or whatever you think will bring their attention to AMT and George as as a person
Then go to court. Some urgent REAL legal action which will scare them. And they will contact you immediately

mark my words. The refund preferable or your miner will be coming shortly.
No matter what we write here they just do not care. T is useless to mention you hav Los your investment already so just as for full refund if you can take this as advise
Why should we take advise from someone who doesn't even live in America and can't even get a visa to America?
We already posted the legal action that one can take earlier. That is ... Delaware Consumer Affairs and Small Claims court.
I think you should get lost also. This is an American matter to be handled by American consumers in the appropriate manner.
Wire-fraud is a very serious offense in the USA. Here is an example of a guy who sold 'weight loss books'... he got 10 years in jail. http://www.businessinsider.com/best-selling-author-kevin-trudeau-gets-10-years-in-prison-for-massive-deception-2014-3
So AMT even intends on not delivering 1.2 THs miners or not refunding customers for not delivering, they and their employees are going to spend a long time in jail.
This IS NOT just an American matter. They have taken payments from Internationals as well (at least based on their website). When Josh Zipkin flees back to Bulgaria, I hope our European friends might give a helping hand when that day comes.
I remember seeing that guy Kevin on TV selling his 'miracle cures' crap. Funny, didn't know he ended up in jail. There was always something fishy about that guy.