Disgusting service and quality

I'm disgusted with the lack of customer experience from the store manager at Canal Walk NWJ. That along with the poor quality of stock makes NWJ the worse jeweler retailer I've ever experience. My rose gold cluster engagement ring was bought in October 2016 and diamand fell out in March 2017. The lack of empathy expressed by store manager and area manager was shocking. I'm disgusted the way they handle the situation and its unprofessional from a area manager and a store manager side. I pay cash for the ring and now the store can't refund my money even with proof of recept telling me I need to take a NWJ voucher or wait for ring to be send to head office in two weeks to do the refund in two to three weeks After leaving several messages for store manager to call me back still no response My engagement ring experience was ruined with this poor NWJ quality

Yours Truly Frustrated fiance