Poor Quality Jewelry

I received my engagement ring a year ago, it has been back to NWJ 3 times within this year as the stones keep falling I out.

I don't sleep with the ring on. I don't shower or wash dishes with the ring on as I'm so scared to lose the diamonds. Yet, the diamonds fall out. When my fiance and I purchased the ring the sales consultant promised that the stones are set and I could "punch" my partner and the stones wouldn't fall out when I asked about this exact issue.

Quite frankly I'd like the money back so we could buy a ring elsewhere that won't have these issues. Everytime I go back they tell me it's just normal "wear and tear" but I don't wear my ring nearly enough and for the diamonds for fall out 3x in a year? This ring is a flook and I am extremely unhappy. I have received absolutely no joy from the staff at NWJ Pavillion either. They just keep sending it back and promising this time it will be fine.