PC Jewellers — after purchase of two month diamond ring look artificial

I purchased my engagement ring from pc jwellers karol bagh after 2 month diamond ring looks like artificial ring poor quality of diamond along with metal... It’s really very wrost exeperince with pc.. And two diamond nikl bh gye jese artificial stone nikl jata hai... Diamond ki jgh par metal lgaya hua hai.. White gold yellow ya koi or metal dikh rha hai 50k ki ring mei money back lene par apna acha pesa deduct kr lenge yh inki policy se services nh poor quality