You want the right to be treated as well as those who get the best treatment by the sheriff's department, but selective enforcement isn't a good defense. You don't have that right.
And you want to be able to rely on an "official" sign, as if it's a contract between you (and I guess everyone else who can read it) and the sheriff's department. But if you don't have this right under the constitution, it doesn't matter what any sign says.
Isn't not having someone who'd take your collect call why you sat in jail for a week?
I'm only licensed in CA. Please note that this answer does not constitute legal advice, and should not be relied on, since each state has different laws, each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue. This answer does not create an attorney-client relationship.