well... I do not know if you would find this helpful (but since I have struggled in the past with inadequate heathcare, I have found the following thing/method quite useful, so here it is....)
1) it seems to me that you haven't been offered a sufficient healthcare yet
2) try to imagine the help you might need, relax, close your eyes, and imagine the place (if it is the admission to some Trauma Centre - why not.. ) and imagine a treatment and people there that would be helpful and healing ..
3) of course you can have a loud voice (or whatever) if you suffer (are suffering just now, or/and have been suffering for so long .. ) - the fact that they are not able to "cope" with your loud voice is just a sign they are not being very useful - TRY TO IMAGINE SOMEONE THAT WOULD BE USEFUL TO EASE YOUR SUFFERING (try to imagine kind words that would be helpful, try to imagine a better systematical help).. . i am afraid that my grasp of English is not adequate to express sufficiently what I mean, but try to imagine the words you need to hear to feel better..
I am sending a hug....