Bad quality ring sold at sterns cresta

My fiancé bought my engagement ring at sterns on the 27th December the beginning of April I noticed my ring started peeling and changing colour when I took it back they said they will send it in for evaluation.. 2 weeks later I received no call or any form of communication when I called them today on the 8th may 2026 they told me my ring came back and there is nothing wrong they polished it ??? POLISHED?? AND I SHOULD WEAR CLOVES ?? THAT IS BULL**** IF YOU ASK ME selling us **** quality rings and still have the nerve to tell me I have to wear cloves there is nothing wrong with my ring ? I am so angry I dont even want another ring in replacement I want my ****en money back