You say the seller of the bad heifer is "well respected in the area" so why doesn't he respond to your calls and emails? Probably because he thinks you will give up and stop calling. Since the heifer was crazy when you got her home and won't breed, I recommend contacting a lawyer. One letter from him is probably all it will take to get things taken care of. Shame on the seller for not making things right, sooner. Good luck!