Dress maker produced shocking quality

I would like to know what to do about this dress maker in Pietermaritzburg who has produced absolute shocking quality for my daughters bridesmaids dresses for her wedding. She made the bridesmaids dressess and only finished them on the Friday before the wedding. All the workmanship on the dressess is very poor. Hems not sowed, gapping dresses, stitching coming undone, a stain on the one dress, lengths wrong and most of what was asked of her to fix she just did not do it. My daughter and I paid R900 labour per dress and the material was bought sperately by my daughter. These dressess are not worth R 50 and will never be able to be worn or sold due to the very poor quality. We did try call her the friday night of the wedding and we messaged her asking for an explanation and i have emailed her for the money back. The only responses to date are \ she is sorry we feel that way"and \"" can she meet with us\"" Please advise ? """