Perez Jewelry

Was told ring was real but it turned colors and turned my wife's finger green after a few minutes.I went in to Perez jewelry to buy my wife a Mothers Day gift. I bought her a ring but I needed to get it resized for her. The salesman sized it for me told me that because he had to size it I couldn't return it, put it in a box and bag and I paid for the ring 230$ in cash and 50 on my debit card. I gave my wife the ring on May 8th it looked nice she liked it, but after 15 minutes she came up to me and said the ring had started to rust so she wanted to take it back and see if it could be fixed when she took the ring off we saw that her finger was green and the inside of the ring was rusting as well. I went back to the store on Monday with my wife she explained what had happened and the salesman took my number down and said he would call the next day when it was fixed. I never received a call from him. I kept going in to check and the salesman was on "vacation" it's been almost three months I don't have the 280$ I paid nor do I have the ring.Desired SettlementI would like A refund the ring turned colors and I don't want to risk getting anything else and it be fake too.