OMG! If the pet shop won't take the dog back, and you and/or yours do not want the dog, PLEASE find a Yorkie rescue to take the dog to. They will get it medical care. Do this ASAP!!!
Option 2: Care Credit: credit card for animal medical needs.
CareCredit® Healthcare Finance - Payment Plans and Financing for Cosmetic Surgery, Dental, Vision, Hearing, Veterinary & Other Medical Procedures
Get that baby to the vet and sue the petshop for the cost ....
NEVER, NEVER NEVER buy a puppy from a pet shop