Pathetic customer care service. Review on BlueStone

I have contacted Bluestone customer service many times regarding some loose solitaires and mount to be fitted. I have tried through chat box, phone calls and once by email. Every time I contacted through phone calls or chat box they reply very nicely and promise to give a call back from solitaire department. After many requests one guy named Roshan from solitaire customer service gave me a call back. I gave him the details of the solitaire and mount that to be modified with. And I waited for him for his call back. And in the meantime, the solitaire got sold out. After 7-8 days he called me and said the solitaire was sold out and mailed me that very day about the estimated amount to be paid for the modified mount. My question is, If the solitaire was sold out then what am I going to fit in the mount? Then He suggested me some other solitaires which were way bigger for my budget. Then I chose another solitaire and mount and asked him about them. He said that he would get back to me in 2 days, but he didn’t. In the meantime, I had questioned about many solitaires through chat box. Every time they promised to give me a call back regarding my issue but I neither received a callback nor an email response and the solitaires which I had chosen are vanished from the chart now. I assume those have been sold out. If the customers do not get proper and timely response, what’s the use of customer service, moreover if they do not know anything about jewelry that sells in their company website where they work, how come they serve customers with adequate information? The website also does not work properly most of the time. I have complained about it as well, but despite trying to solve the issue the executive says that it happens sometimes. What a PATHETIC customer service.