I didn't get my yorkie from Jeff Dane but I've talked to him a few times when I got mine from another breeder 2 years ago. I asked a lot of questions about the care of yorkies and his responses were always quick and very detailed. He's been nothing but helpful to me.
I'm sorry you had a bad experience with him!! If he really is a bad breeder I'd definately warn other future yorkie moms to stay away from him. Hope your baby is ok