The name comes up unavailable. I answer and never say anything. After a few seconds it hangs up.
Normally when I get a name unavailable I never answer.
No never used our cat's name on anything but at the vets. The cat has an unusual name and that's what bothers us if for someone to call and ask for that name.
We know our Vet didn't give out any information. We've used her for 18 years.