Disappointed and Irritated customer

On 5 May 2018, I took my 2 rings into Stern's Greenstone. One ring was for sizing and the other for fixing. I was assisted by Lebo. During the week of 7 May, Stern's contacted me advising of the quote to fix the gents ring of which I declined. I requested the ring be returned to the store and I will collect together with my ring. Later in the same week I was advised that my ring was ready for collection. On 13 May I went in to collect my ring and when I asked about the gents ring I was told it's still at the repair shop. I did advise the attendants at store that I declined quote so ring must please be returned. Since then I have been following up every week and keep getting told the same thing " the ring is still at the repair shop. We will follow up and call you". On Sunday 27 May again I followed up on my ring and again was told they will check and call me back. The week is almost over and I have not received a call. Today, 31 May I have been trying to contact store with no luck. I am quite irritated with the service and I cannot understand why I should continuously be phoning for an item that belongs to me. I need an honest answer as to where my ring is and I would like it returned. I'm very disappointed in this service of such a well know store. Please revert soonest