They are the very high level frauds. In my first buying i cheated by them.They got the money from me and credited into the seller account and now they are saying "be calm Surely we will trace the seller" after seller was run away. So be very carefull they are linked theif doing in higher level. after lost if u are in US are in Europe you can take Legal action. But like me in india we can't legal action very easily because they will bribe the higher level police officers and judges.