How gutting!
I've never used someone else to do the quilting, but would expect there to be some sort of process to work through if you're not happy with it. Have you talked to the person who did it?
I saw a quilt in a show the other day, a mckenna ryan one, that had been professionally quilted, and if it was mine, I would have cried when it came back it was that horrible. The design was chunky and solid, while the quilt top was hand appliqued and was so fine and delicate. It was just totally wrong. Yet the lady who quilted it has an awesome reputation.