The Tee Drop Fake cheap Rip offs Internet

 I brought a ring that's was in support of epilepsy Australia. now the ring was mark quality 925 sterling silver when it arrives it clearly was not. I hoped for the best and gave it to my partner for her birthday /engagement present because it still was make 925. after a day of wearing it the metal began to darken and her finger went green witch was very emparising for me. I then tried to contact the company several times for a refund with no reply. iam very disappointed with the product and the company witch uses good charity's to sell there rip off jewellery any help would be greatly appreciated thank you