Unauthorized Repair (re-sizing)

My wife and I decided to get a quote on re-sizing her 9 Carat wedding band that we have owned for 28 years from the American Swiss store in Cape Gate Cape Town on Saturday 26 March 2022. We were helped by a friendly gentleman who informed us that they would need to send the ring to their jeweler who was off site and that we were to wait for a quotation SMS. He was very explicit in stating that we should not accept the SMS, instead we should call the store telephonically to inform them of the received quotation and they will advise further.

On Friday 1 April 2022, my wife received the mentioned SMS, we were quoted R2419.31 to have the ring up-sized from a size F to a size I. As requested we did not respond to the quote. However in a separate SMS we were informed - "confirmation: you have accepted the American Swiss repair quote with reference...we will let you know when the repair is ready for collection at ASJ Cape Gate" We immediately called the Cape Gate store and spoke with Maria. We informed her of the SMS's where after she informed us that we should ignore the confirmation SMS Maria confirmed having the ring in her possession and continued to describe the ring to my wife. I then called Maria later to discuss the quote. I enquired about the SMS and outstanding evaluation that was to be performed which was not as per our request. I then requested that a quote be obtained for the evaluation and which I would only receive on Friday 8 April 2022. However on Saturday 3 April 2022 we decided to go and collect the ring without going ahead with the re-sizing or evaluation, to our utter shock and dismay, we were informed that the ring was already repaired. This could only have happened last week without our express permission or authority. This unprofessional and more importantly not treating the client fairly and infringing on their right to decide. We want our ring back immediately. We do not trust you with our pride and joy. The ring today feels lighter in comparison to when we handed this treasure to you in good faith. We did not authorize the repair and demand our ring back.