Bests & Worsts Reviews from Amazon

I purchased an iPhone X. The whole reason I made this purchase was because it was “Amazon guaranteed”. It arrived on a Thursday; Immediately when the phone arrived I noticed issues. Upon making my first call, the phone would turn off and the restart 5 or 6 times in a row, not even allowing me to access the Home Screen. So I called Amazon. I talked to Ryan E. A “customer support representative” at Amazon. Ryan gave three possible options 1) bring the phone to an Apple store and they will either fix the problem or replace it, 2) return the item with possible two week reimbursement. 3) ship it to Apple and they would fix the problemI chose to set up an appointment at the Apple store to have the problem fixed. At which point Ryan E. Booked the appointment for me, over the phone, with an Apple representative as it was a Amazon guaranteed product. Tuesday I drove 200 miles away to the Apple store. The Apple representative performed a diagnostic and informed me the main processing chip was faulty and therefore the phone needed to be replaced and they even had the exact replacement in store. As Amazon had already verified everything would be taken care of cost wise, I called Amazon to provide a “genius bar work authorization & service confirmation” form for replacement as it would cost $549.00. Ashley C, who told me that they would not pay for the replacement and the only option for me was to return the product and get a refund. I then told Ashley exactly what Ryan told me. Ashley said I was wrong and that amazon did not set up an appointment for an apple store repair, and that I would need to prove the appointment was made by a representative of amazon. When I explained that I had email verification she then said "I see the email" then refused to follow through on replacement even though and told me that my only option was to return the phone or keep it upon bringing up what amazon had previously promised like magic I was disconnected. At that point since I had an appointment and I didn't want to take up anyone else's time; I decided to leave. When I got back to my car, I once again decided to call Amazon. This time while talking with the representative Ashley I was told that the phone I purchased was not amazon guaranteed, even though the actual iPhone X amazon listing specifically says "Amazon Guaranteed; eligible for replacement or refund within 90 days". Furthermore, Ashley told me that a return and refund is my only option I brought up that amazon listed the product under Amazon guaranteed specifically states "Quick support for claims and troubleshooting. Eligible for replacement or refund within 90 days of receipt if you are not satisfied." she continued by stating the product was not amazon guaranteed and stated that the listing is removed and they can't do anything further. When I asked to speak to a manager I was transferred to Sam G. who by the way was incredibly rude, and refused to help me in any way and refused to replace the product, or assist me with anything other that returning the iPhone. I am disgusted at the way this whole situation has been handled. Even after reviewing amazons guaranteed policy I still cannot find where it states amazon has the ability to refuse to follow through with their guaranteed product replacement. I do know that I will not only be bringing this up with the BBB but also the attorney general.