More than a month to string 10 pearls!!!

I gave my girlfriend's pearl necklace that I bought from them in to add 10 pearls in the necklace. It has already been a month and upon repeated calls they are still unable to tell us where the pearls are and when they will be back. They do not make any atempt from their side to ever find out where the pearls are and do not have the common client driven service to call and give feedback on the issue. I feel the service we recieved from them are terrible and as a consequence they have definitely lost me as a future customer. This in a competitive market and under challenging conditions!