Amazon India — False Accusations On Returned Items

I bought two of the same product from Amazon Renewed and Refurbished, which I scheduled to return since it wasn't really an effective product. It took me three calls and two complaints to finally have the item picked up more than two weeks after the scheduled date. The delivery guy who came for the pickup claimed that he only has to pick up one item, but I had placed pickup for both and the app also showed the pickup was for two of the items. So, I gave him both and he confirmed the pickup, which in turn showed up on the app, saying pickup was complete for the items. But, when I saw it hadn't shown to have reached the seller in the app, I reached out and found from customer service that the item I sent was the wrong one, and they led me to an email to appeal to the claim, but ultimately they made the final decision to not give me the refund till I return the "right" product, which I already did. And it doesn't seem as though I'd get even the item back.