American Swiss review: Poor quality & repairs policy

We bought a ring in September 2019, 3 months later I noticed that the colour of the ring was coming off. This was not a super expensive ring and for that reason I never wore it while working in water or while cleaning. I took the ring back in Jan 2020, 4 months after we bought it and was told that becuase it is plated rose gold the colour would come off eventually. I completely understand that this would happen over time but not within 4 months. The ring was sent for an assessment and they told me that I would have to pay to have it fixed as it was damaged due to Wear and Tear. I dont understand this policy at all as the 6 month return policy states that The goods must have been used for their intended purpose, surely me wearing my ring is the intended purpose, or am I wrong? They efused to assist us with fixing the ring if we did not pay for it.
I believe this goes completely against their repair/returns policy. I am highly disgusted and will no longer be purchasing our wedding rings from AMERICAN SWISS as planned.