Can't you famously just return stuff to Amazon within a month for basically any reason? I purchased a monitor from Dell and after a few weeks it became clear that there was a loose connection internally. It was extremely simple to prove. But getting it replaced was hell. I went through the whole process of creating a ticket, talking to 3 different people, taking photos of the thing from every angle and then after they failed to get back to me for a week, I emailed for an update and was told "Sorry sir, there was no activity on the ticket for over a week so the ticket was closed". It didn't matter that the delay was on their side. And no they wouldn't reopen the ticket, and no I couldn't refer to the old ticket, and no the old photos wouldn't work. Start over. Talk to several different support people again, take all those photos again.

My SIL bought a scanner from Amazon a few months back and never unboxed it because she was moving house. When she did, it was faulty. They took it back without much of a fight even though the month was up. She just said "I unboxed it yesterday, it's broken".