Leave a bad review, trash the seller online, make a video, get a refund or do a payment reversal.
Just ignoring it or making excuses like they never explicitly said "pure copper" does nothing. It's not just limited to cheap products either they are using defective materials industry wide.
Bundle up your chinese ewaste and send it to the local chinese embassy for disposal. Then go buy from a reputable brand or seller.
You are a legal daredevil, aren't you? What you suggest is highly illegal, at least in our part of the western world. Might be OK for australian outback, I don't know.
They sold cheap stuff, sure. They sold stuff that did not meet your expectations, fine. But if you ("you" as in "someone") are only willing to pay 1 Dollar, while you expect the product specifications of a 20 Dollar product, and start complaining about the specifications only being as godd as a 1 Dollar product - that I would call foolish.
And again - they did not promise something they did not deliver. It is just your hope of receiving a brand new 911 for the price of a well used Yugo - and then badmouthing the seller. Get real and maybe reconsider your accusations.
Sure, there are complete fraudulent sellers, but those are everywhere. And China is still very godd for bargain purchases, compared to local shop prices.