If you're in the UK then i totally understand - i only got diagnosed after being treated in a private hospital although i knew for a very long time that i had a personality disorder. It took me a year to convince my psychiatrist that i needed a DBT programme so all i can say is if you're getting nowhere with your current psych either switch to someone else or ask to be referred to a specialist or even your local community personality disorder service. Perhaps speaking to them directly might help. Best of luck - this is a b itch of disorder to get treated so all i can say is don't give up.