ring sizing

I purchased a ring from the N1 City branch Goodwood in December 2017 after lay buying it over a 4 month period , I was advised that resizing can only be done after the final payment was made, when i had received the ring was told to come back in January 2018 as the jewelers were on leave and would only return then, i returned in January only to be told then that my fiance's size was unavailable and i had to have a new ring made , I was told by the branch manager that a query would have to put forward if they can make the ring , I waited from February till late March, during this time i only received one phone call from the branch and had to go the store on multiple times to find out what was happening because I was no longer getting any feedback, near the end of march I was told I can bring the ring in and the jewelers would make a new ring with the same design and my fiance size for free, I brought in the ring and was told it would be ready April 2nd ( bearing in mind I knew they wouldn't have it as it was a public holiday) I returned to the store on the April 6th only to be be told that my ring is still not ready yet and that it would only be ready by the April 10th , I went to the branch today on the 10th only to be told again my ring is not yet there. I have now waited now more the 4 months for a ring that my fiance has never even worn, yet I have paid for it already , I am extremely irate over this , I will NEVER shop at American Swiss again