Nobody cares about my pain or wants to help

Hi everyone , I’m looking for some advice, but before I start sorry for any mistakes & I have a mouth guard!

My dentist said they can no longer help me with my condition and pain, they’re sending me to a dental hospital for the fourth time, but decided to tell me that it’s a waste of time because they won’t do anything for me either, other than offer me Botox which I’ll need to find someone to do it for me myself ? I’ve had it before, i went private when nobody would listen to my pain , i didn’t work for long , They also told me not to bother going to a private doctor/dentist cause they don’t do surgery at all in the uk….. They’ve been pretty cheeky to me about it too , as if they don’t care or want to know about my pain anymore, acting fed up when I tell them I can’t live with it , I’m also autistic and have anxiety so it doesn’t help me either , they also make me feel like I’m lying about my condition and pain , telling me I just need to exercise my jaw more, which I do daily.

I feel like I’m on a never ending spiral..I’ve been to a&e two weeks ago due to severe pain , they weren’t going to help me but a doctor seen me and felt so bad he prescribed me Diclofenac, as I’ve been taking every painkiller I can including Co-codamol, nothing was touching my pain from my jaw to my collarbone , my severe ear ache and throat pain , I’m struggling to eat !

My question is , is this normal treatment for someone with severe pain ? And can anyone help me with temporary solutions I can’t take the pain anymore 💔