My dentist did a very poor job on my veneers and wasn't willing to replace them for me, is it reasonable to ask for a refund?

I had 6 veneers. The (pointy) edge of the veneer on 1 canine chipped 2 mins after he bonded them when i was still in his office. The edge of 2nd canine chipped next day. He first agreed to fix it & if i am't happy about the results, he can replace them for free. He polished the edge. I didn't like it bc the shapes looked weird & aren't identical anymore. I asked him to replace them or refund me & he refused. He said it was my fault bc i have weird parafunctional habit. It it really my fault?