Online breeders

I browsed their website looking for a new puppy. Beautiful pictures of all the pups. I contacted them via the whatsapp nr they supply. All went well until I asked to come see the puppy I was interested in. Then they became defensive and very rude, calling me names eyc. Thereafter I was blocked and the whole conversation disappeared. By the language and grammar suddenly used, I suspect they are not "Dr David and Tanya van Graan"