Important Question about Bridal Shop

The other day I posted that I found my dress at Elena Bridal in Merrick. We didn't buy the dress yet, but I LOVE it.

My problem now though is that I have just heard some bad things from a friend of my cousin's. He told me they messed up her dress, mother's and grandmothers dresses.

I'm upset now cause I don't know what to do. Please let me know of your experiences with them. Thank you for you help.