This is absolutely unacceptable, but unfortunately I think this kind of experience is all too common, which is quite awful if you ask me. It shouldn't be as hard as it is for people so in need of help to get the help they need.

Can you try calling the psychiatrist and explaining to them just how hard of a time you're having, seeing if maybe they can squeeze you in one day, or if someone cancels an appointment if you can fill their spot? Anyway, hang in there.