Bungwa has a very dry mouth and I only managed to get a very tiny white patch on the test card but it was still sufficient to do the test with that. It only turns white when it's dry - the instructions are quite explicit. Of course as Pat says it could be a bad test form.
I agree with the others that this is not a common practice among BCOA breeders. I am sorry that this happened to you and yes, you should get your deposit back.
