I'm not even sure where to start! The store probally got the dog from a puppy mill and it that is a whole nother issue...all about making money. So, no they don't care who buys the dog. Regardless, that is not the dog's fault and NO DOG deserves a beating for anything!!!
This guy sounds like an $%#hole extradonarie. I would do anything in my power to keep him from getting that dog back. Are there JRT rescues in your area? What about an animal cruelty division of the police? Do you know anyone else who could take the dog?
Personally, I think this guy needs to be taken out in beat til he vomits blood. Then maybe he could be more reasonable (doubt it)


Good luck....let us know what happens