Poor quality at hefty price tag, terrible after sales by Area Manager

On the 20th of Dec 2018 I purchased a rose gold bangle from Sterns mall of Africa for R4299, which comes with 6 months warranty. 2 months after the purchase the bangle broke. I have returned it to Sandton City Sterns in the beginning of March 2019 together with a proof of purchase. They sent it to the jeweler, who assessed the damage and said that because the bangle was hollow it could not be repaired. I dealt with Gail from Customer service department and Vera from Mall of Africa. Vera was very helpful and said that I could come to the store to exchange the goods. However, at the last moment Area Manager Zelda van Berg interfered and refused to exchange the bangle/ or reimburse me in any way. She refused to engage on my numerous requests and for the staff to provide me with her details. She passed the message that as far as she was concerned the matter was resolved, I could have damaged the bracelet and it was not purchased like that. Gail said that unfortunately she could not overrule Area manager’s decision. Gold Jewelry is a luxury purchase, that is sentimental in value and expected to be long lasting. When I look at the broken bracelet, I can see how thin the gold is, it inevitable to break at some point, as it did. One would expect a higher quality that comes at such a hefty price tag. I was certainly not aware that the bracelet was hollow and could not be repaired, otherwise would not have ever purchased it. I had a really bad experience and was left feeling worthless as a customer. Sterns had an opportunity to buy my loyalty by providing me with a good service, but instead they chose to lose my business. Life time value of me as a client and my immediate family/friends that will never purchase not only Stern but Foshini Group products, is a lot higher than Zelda’s time on the phone or compensating we appropriately as per warranty