Poor quality of a ring

I bought a ring and within 6 months stone fell off and now it’s for the second time I have returned the ring back to the store a very helpful manager and Ayanda advised me it will be accessed before they can advice with a way forward. My point here is I am disappointed as it was taken to repair before I wasn’t expecting that a month after I will experience the same thing. I don’t want the product anymore kindly consider another alternative. REF***