Disappointed and ****ed

American swiss woodlands extremely Disappointed to buy something from this store hopefully I'll get helped well we bought just an engagement ring from them on the 29th of July 2025 and the colour started changing we called and they said they'll book it in well they did and it came back on the 15th of October 2025 it even went worse from silver to bronze. I've asked for my money back and they refused can I kindly please at least get refunded back my money coz clearly the store is giving false adverti*****t you can't say it's silver next thing you get something else