Terrible after sales service

Complained via Facebook, it has now been a week and no response. Complained via call Centre, week later no response. Worst service ever. " Good Day, I trust you are well. I am not sure whether you are able to see the above complaint. With regards to the above, the ring was sized and excellent service was provided with the above complaint however I am stuck in a situation AGAIN. I started wearing this ring on the 01/09/2018 as it formed part of my wedding ring. Coming home today, 3 months later, I realized that I am missing a few diamantes. Please see the attached photo. It cheeses me off because THREE MONTHS later I cannot wear this ring because of what happened. It is easy to say it can be fixed, but what will happen if this happens again? It makes me wanna rather settle for a replacement ring just for piece of mind. A company this big cannot offer rings that you wear for 3 months before the details start falling out. Awaiting your response. Regards " I am at the point of giving up on this company as a whole.