Starting to get a little frustrated?

Okay I bought a yorkie yesterday. But parents are purebred and registered she had a litter of four 3 boys and one little itty bitty girl. Well one of the male pups was white(my pup). And no one wanted the little guy because he is the odd ball. Well I keep trying to explain to everyone that my dog is purebred and all these dog experts that says something keeping saying that there is no such thing as a white ( Parti) yorkie. What is the best to handle this situation with out flipping out because of these no it alls?