Poor Customer Service

I was at your Centurion Mall store yesterday (22 February 2018) between 5-6pm. I wanted to have a small diamond replaced in a dress ring I had purchased a more than 2 years ago. The sales people were extremely rude and unhelpful. They said that the ring must have been purchased at sterns - which I confirmed but that was not good enough, they wanted proof, no one walks around with proof of an old ring especially one that does not cost more than R10 000. It was a square created emerald with two small diamonds on either side set in 9ct gold and the store assistant insisted that she has been working there for two years and she does not recognise the ring as being one of Sterns rings. She is not an authority on every ring that Sterns has put out in the last few years yet her opinion counted more than mine as a customer. In any event I walked out but this mail is to state when store personal act in this manner it deters me from ever wanting to purchase from you again and while this may have been a cheap ring I have previously purchased your forever diamonds including your 1ct solitaire. but going forward I would rather go to a Brown's where customers are treated much better and if I need to repair something (at my own cost at that) you can.