Reputable wedding dress tailor in Saigon.

I was curious if anyone has any experience with having their wedding dress altered in Saigon? I need a very skilled one that could repair and alter some damage that's been done. My fiancé's secretary referred her to a shop (if you could call it that) for alterations. The dress was returned 3 weeks later with stains and heavily damaged.
I haven't seen the dress (as per tradition), but I have never seen my fiancé so upset. What I mean by upset is hysterically crying for most of the day. Her description includes the terms "ruined and butchered". So if anyone could point me in the direction of a tailor that could save the dress I would greatly appreciate it. Cost is not an option in getting it corrected.