SINOSIGMA GROUP Zhiren Li took my money , sell machine bitcoin that never work , no support ,never Guang Zhou Internet

Buy a bitcoin miner machine for US $499.00 ,

First they send it to me with wrong alimentation cable I have to buy a new one 

When I start the machine nothing work , send 3 mails no answer about this problem, I ask a tutorial link in order to know I my configuration was right, I receive  4 pictures in chinese, whitout any explanation.

Sent message again asking  some support about this, nothing just get

• Zhiren Li

  01:27 Jun 11,2014

  Dear Conde, 
  
  we will refund 7 EUROS  to you. Do not worry. 
  
  As you told me will check the configuration , However, you do not tell us any result.  so we are still waiting for your information till now. 
  
  Pease let us know what's the situation now. 
  
  Ok, it  is our fault to send you instruction with Chinese words. we are sorry. We should have translated it into English. 
  
  But we sincerely hope if you have any problem, please contact with us first. hope we can solve the problem together. but not directly leave 1 star negative feedback. We are still waiting for your answer about the confirguration, very sad to get a negative feedback.  To do business well, solve problem is both we hope, right? 
  
  Anything need our help, please let us know. We will try to solve the problem. 
  
  We really feel sorry to you. 
  
  Can you change the 1 star negative feedback to 5 star positive? Thanks very much. And in order to thanks for your help, we will have bitcoin bonus fo you. Together with the refund 7 EUROs. 
  
  Awaiting for your soon information. 
  
  Regards!
  
  Susie
  SINOSIGMA GROUP 

after several message I receved my 7 euros in bitcoins nothing else.  Don't want to send the machine back to get refund.

And today big joke I receved the custom bill 50 usd to pay ,so I spend 500usd for nothing  this is the worst company I ever deal with