I filed a complaint in BBB against Minersource, as the nearest legal body to by law not existing DZ Miner Coop.

BBB CASE#: 75229997

No delivery of service - hosted bitcoin mining on BlackArrow Prospero X-3
Purchase date: 20th December 2013, 2nd January 2014
Problem date: ongoing
Model: Black Arrow Prospero X-3
Order no. 1354, 1489
260 + 520 USD paid by Bitcoin

Case Description:

On 20th December 2013 and on 2nd January 2014 I ordered 6 bitcoin mining shares (in two orders #1354, #1489, 2+4 shares - 260 + 520 USD paid by Bitcoin) by DZMinerCoop company, which is personally connected to Minersource and it completely stopped communicating so I take it as Minersource is now responsible for the orders of DZMinerCoop (as there are the same people and even the same machines). The machines planned to be used in hosted bitcoin mining were Black Arrow Prospero X-3.

There was no delivery of the service until this day. I requested full refund or product replacement in the form of credit in Minersource e-shop, but nobody responded me until this day. 

Answer from Minersource

This customer has no orders with Miner Hosting LLC.

Miner Hosting LLC sold units to the DZMinerCoop, and is only responsible for the sale to DZMinerCoop and for the hosting of the machines upon arrival.

My consequent answer

(The consumer indicated he/she DID NOT accept the response from the business.)
DZ Miner Coop as the company stopped communicating with all the customers many months ago. As they are not oficially registered anywhere (as far as I know), and it is publicly known the personal connection between Minersource and DZ Miner Coop, I have to ask for refund Minersource.

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Well, basically they are trying to sneak out from any responsibility. Any lawyers here?