If these scammers and thieves do not accept to refund the money, or send the correct product, or they keep ignoring your emails, report them to the following authorities in Australia, China and Honk Kong, an PayPal too: State Administration for Market Regulation - China
Competition Commission(link is external) - Hong Kong
Scam watch - Australia
PayPal - Report Scam and fraud
Chines Embassy in Canberra:-Economic and commercial affairs: *******@mofcom.gov.cn
I already reported this website to all the above authorities