Who to pursue to get refund, dentist or Clearcorrect?

I started in Nov 2011 and my teeth are not aligned the dentist has sent the trays back 6 times and Clearcorrect wants to charge me a fee (I already paid in full). I now have a space between my incisors, the dentist insisted on 'shaving' them even though I requested him not to. I have not received a new set of trays since Aug. If I hired someone to paint my house and paid them in full for it, and they only painted one wall I would be sending them to small claims to recover my money.