Radar62 said "There is no more story. I have no answers. Sorry I asked. "
But as no one else on here has come across this issue then as previously suggested your best course of action is to phone the vet clinics in question to get a definitive answer, or try to form a relationship with a different clinic who can hopefully take care of your animals.
They likely will though prefer to build a client/animal/vet relationship to ensure that their services better match the needs and care of your animals.