Gold Ring changing colour

<p>I bought my wedding ring in 2014 at the Gateway Sterns and it then started changing colour in 2016. I sent it back and after a struggle they finally sent it to Cape Town where eventually it was written off and i was told to take another one. That one too changed in to some bronze colour i took back at the Pavillion Sterns and they sent to a jeweller who said it had some chemical in it. I took it back after they had cleaned it and in 2 days it changed back again. I have now taken it back and I just want them to credit me back as i don't want to take any ring from them again. This back and forth has costed me petrol money and time. The store manager told me she can't do that, to be honest I am really tired of getting faulty rings at Sterns. Mind you i have an engagement ring that is gold and it was bought in 2013 at American Swiss and it has never been cleaned nor has it EVER changed colour. I was told by the Sterns Manager that I need to take it off and wear it like a dress ring but I can't wear a ring that comes with so many rules yet i have a gold ring that has been exposed to me bathing and putting on lotion. Please can i just be credited and let us part ways. Its going to be a year now going back and forth exchanging rings. </p>