Recently Amazon made it much harder to select sellers.
Now on some products, the page is so confusing that you don't know is it "Fullfilled by Amazon" or you are buying from someone in China.
Race to the bottom and all...
Recently I got them to refund me after showing I returned the defective item (tracking number + signed by an employee) the SAME day it was returned to the seller's location. Granted, the seller and I had a dispute (which was that the seller refused to acknowledge the device spit out a fair amount of magic smoke when powering a small charger).
Again, it's effort in and effort out. If you buy something off Amazon, make sure it's being shipped to you by Amazon!