Scam victims. Don't even bother to send anything back to Asia (China, Hong Kong, etc), first based on principle buyer should not have to pay for seller's mistake (and in most scams they are obviously not honest mistakes, like wrong size or color, even in those cases seller should pay for return shipping), second, the scammers would not provide a genuine valid address, even if you send it, it will never get delivered and the case just hangs till it expires.
What you need to do is contact customer service, chat in message center seems to be the only option nowadays. After getting to a human, explain what happen and upload photos of worthless items to convince the rep its a scam (legitimate sellers would not want a 10 cent toy shipped back to them, real sellers want customers keep buying from them, only scammers demand return of worthless items, anybody with an ounce of brain can see that). If first rep won't help ask for another, you probably get a different rep each time you dialogue anyway, keep trying and plead your case.
