Estee Lauder refuses to give my refund!

I purchased foundation on Estee Lauder website in November 2022, got wrong shade. I was told I can't exchange they will give a refund. Four months later I still have not recieved my money! I've followed up numerous times, all I get is "you refund is being processed". I'm so disappointed in Estee Lauder I've been using their products for years this is such a disappointment!