Lost/stolen ring

I had a engagement ring made with Mojet. I took the ring back for repairs. I was informed of the cost for the repairs. I informed them that i will let them know if they can go forth with the repairs. After a while my fiance/now wife went to collect the damaged ring and was informed that I have picked up the ring. Besides being rude to her and screamong at her that she was a liar. They apparently remeber me I came in to collect the ring with a bike helmet. First of all I do not own a motorbike to have a helmet nor did i collect the ring. To this date after numerous emails and arguing. I still have not received the ring back or an apology for losing the ring. Well losing it or re-using the diamonds for another customer I don't know. But their rude and inconsiderate attitude and repsones is disgraceful. I would never recommend these people to any one.