Worst mistake of my life

This is the worst experience of my life. Kusa puppies for sale sells puppies in their website. Once you enquire You deal with Johan Swardt who sends pics of the puppies and asks for full payment. The payment included delivery of the puppy, it was R4500. He then links you with a courier company called Airlinks couriers. They send you confirmation of delivery and then Carlson Pillay sends you and email with information but then requests that you buy a new crate for the puppy to travel because of the weather conditions. Johan acts like he doesn’t know this information and indicates that you should confirm details with the airlinks courier company . Airlinks couriers wants R475 for the crate and R8000 refundable deposit once the puppy is delivered. Then they request you pay an insurance policy of R17000 which is required for the dog to travel. Once I refuse to pay then ask for my refund and that the breeder collect the dog, then they ask you to send a cancellation letter. Once Airlink receives it they no longer respond and the block you or change their password.