Get Your Dog Care Questions Answered by Experts
I suggest that you ask for the veterinary records for the dog or ask to speak with the dog's vet so that you can get a formal diagnosis.
Many people decide after getting a puppy that the puppy is just too much trouble and will tell you just about anything so that they can get their money back.
In the off chance that there is a problem, you need to be prepared to stand by the puppy and take it back from the ownders if they no longer want to keep it.
If there are no vet records and they are going by sight alone, it will be up to you as to how you should proceed.
Let me know if you have more questions.
Just telling us that the head is twisted is not giving us much to go on.
When you see the records, be sure to post again and maybe we can provide more help.
One of the vets might be able to give you more insight into this. I'm just not familiar with what you have described.
If not, please do come back to us when you receive the vet reports and post more info.
I'm sure someone can help you then.