Incorrect resizing of Engagement ring & timeframe

We went in to look at the ring on 19 Jan, decided it was what we want and paid for this. Measurements were again taken& confirmed to be J1/2. The ring was sent to be resized. Brenda assured us this would take about two days, however week later ring arrived, but had been resized to a K, and not the requested J1/2.We went in again to fit the ring, just to make sure that the size K would not fit. Again, measurement were taken and my fianc? was measured at a J1/2. No form of apology was offered, but rather just that the ring could be sent in again for resizing.We are not happy with idea of a ring being resized unnecessarily, considering the price of the ring and that we had made quite sure on the measurement. This is an error on Browns side, but nobody takes responsibility for the mistake.On Monday 8 Feb, I phone Johan (manager - Sandton store) to express my dissatisfaction. I asked for the ring to be remade.I would need to pay for this.I was planning on proposing on Valentines Day,while at Cathedral Peak in the Drakensburg. However, I have been told the remaking of the ring would take 10 working days. although Browns agreed to remaking the ring no timeframes are agreed and no response