To let you all know, a couple of us have reported them to fraud squad in UK since we been ripped off for 2 units. The guy involved ia an Indian fella  called.SANJAY SINGH .He  is registered at companies house registrar as being both owner of Bitmain technologies Ltd, and now also bitmain tech ... , both websites since been able to shut that down. Court case/investigation is pending.
If anyone wants to get onboard and report here are the details. case number: NFRC171202140090. TEL:0330303800 (ONLY FOR THOSE BASED IN UK). outside UK tel:+44 207 386 3620. The more the merrier.
We have a facebook page to alert people of these scammers so please join and lets put the word out there about these companies:https://www.facebook.com/Chinese-scammers-and-fraudulent-companies-558676554468889/notifications/

please be warned