Unsatisfactory level of service

I purchase a ring at American Swiss promenade in Mitchell's plain about just over a month ago. This morning I discovered that one of my sapphires had fallen out. I approached either the consultant or manager and this lady that helped me asked me if I knocked the ring and was very surprised that she asked me a question like that. I then told her it's strange as I don't do hard labouring work so it's very unlikely that I would have damaged it whilst driving a vehicle for 12 hours. She was so unhelpful and with attitude like she's doing me a favor. She asked me for a receipt of which I never had on me but I told her that I purchased it on my account if she could check. Yes I became very agro as I left my card at home as well cause I can straight from work. I understand that I should have all my ducks in a row before heading to any store for assistance with my issue but the fact remains is that she never even attempted to make my experience a good one. The day I purchased the ring I was collecting another one that I brought in for the same problem but they told me that jewelry only has a 6 month warranty so I said thanks and took the ring without argument and left the store. Now I have the same problem with a new ring and this is the kind of service I receive. I am extremely dissatisfied and would like a replacement ring or they must fix it. But I will rather go to a different store where employees have respect and knowledge of knowing who pays their salaries and whom are eager to assist clients.