Custom Sewing Clothing Design

I hired Carol to create a Halloween costume for me in mid-​September. She had other projects to finish, but we purchased the fabric Sept. 13. I met with her to discuss the design, and every time she told me that this was a new design for her, but that we would be fine.
My party was Oct. 25, so I requested that the dress be done Oct. 24.
My BF had to pick it up from her at 6:15 p.m. on the 25^th, just barely an hour before my party was to start.
The seamstress had not finished the dress. She hadn’t run the cording where she had said she would, and when I got it, there was a string of safety pins attached to the dress to hold certain parts on.
This woman claimed to do wedding dresses and costume design, yet she couldn’t handle a sheer mesh fabric, or create a stand-​up collar.
She could not deliver a finished project on time.
I am severely disappointed.