If you have a contract stating the breeder sold you a papered dog, and you have not recived the papers per contract agreement, get a lawyer involved. You have have to sue the breeder in small claims court. There is cost involved, it is just depends on how much it is worth to you.
I had the same issue. So I sent a certified letter to the breeder just mentioning that if I didn't hear from her and have the papers in 5 days I'd be contacting my attorney to deal with it. She called me right after the postman left her porch. I had the papers in hand the next day.