Re: It's not just the pricing...
My employer sold things through Amazon at one point. We did succeed in getting details changed, but it was a PITA.
Problem with Amazon was things like this:-
Listings were (are?) submitted in bulk using the standard unique UPC/EAN barcode as the product identifier. We automatically created a listing of all the products we sold (correctly) identified via their barcodes.
We then got a complaint from a customer that we'd sent him a single black ink cartridge when he was expecting the set. Turned out that an entirely unrelated seller had already created a listing for a *set* of four cartridges and wrongly used the *individual* black cartridge's code for it. Probably because he was selling cartridges in individual boxes, didn't have a barcode for the collective "set" and "borrowed" the black ink cart's barcode to keep Amazon's system happy.
Result is that when we listed the barcode for the black cartridge alone at £1 (or whatever), this was incorrectly associated with and shown as- through absolutely no fault of our own- a set of *four* for the single cart price. Innocent customer thinks he's getting a great price, we think he's buying the black cart alone and send him that, customer complains.
Not the customer's fault, but not ours either. The people to blame were the original third party seller and (arguably) Amazon for letting them get away with that. I can't remember if that was the case where he left bad feedback- it's hard to explain this to the customer without it sounding like a convoluted excuse- and Amazon *did* remove it because we could quite clearly show it wasn't our fault.