Bleh, this sucks so bad.

I'm sorry to see someone going through this. As if getting an appointment at a mental health facility is something we want instead of need. As if it's not as important , or more so in some cases, as getting a doctor's appointment.
I have gotten flack at mental health facilities before and I usually just try looking somewhere else. In my opinion if they give you attitude before you even get the appointment, they will definitely give you attitude at the appointment.
I don't have a solution. I'm sure this isn't the first place you've looked. But I hope you keep looking and trying till you find somewhere decent. I wish you the best of luck.