I bought a pair of thermally insulated lined gloves; when they arrived I found they had no lining, making them useless. The seller offered to refund the money if I returned the gloves AT MY COST. I replied that as they had sent gloves that I had not ordered, it was them that should accept the postage cost, which they refused. The Alibaba disupte service decidedthat as the gloves "still had some value ", ( maybe to the seller, but not to me), I would receive a refund of 60%. So in effect, the seller always wins and the buyer always loses. The seller can ship anything he likes knowing that at worst he will get the item sent back at no cost to him.
I now know why there are so many warnings never to buy from sellers in China, and will not be buying from them again. I prefer to buy from a country like the UK which had genuine buyer protection laws. The UK works on a simple principle - you only pay if you receive what you ordered. I shall do my best to make my case known in Chile, where I live, so that others do not get caught.