I have no experience with LA quilting, but $300 sounds high to me. I've handquilted quilts for others for not much more than that and none of my quilting was just meandering and it was from edge to edge. This makes me sad. I feel you were taken advantage off. Sounds like someone was not in the mood for quilting or was in a very big hurry. Your work of art needs a team member that finishes it well. Quilting is not an afterthought. It's the finishing touch that brings a quilt to life!