Even when your order is "shipped and sold" by Amazon it can still be bogus because amazon mixes the 3rd party seller parts into the pool.
I got shipped a clearly inferior 3rd party generic version of what I ordered. Amazon took it back, but support could not guarantee I'd receive what was presented on the website. I ended up buying it for slightly more from a brick & mortar just to guarantee I at least got something branded correctly.
This is only going to get worse until Amazon is no different from ebay for garbage. With my recent experience, "shipped and sold by Amazon" is a meaningless distinguishing marker now if 3rd party sellers are involved in selling the product.