"Lack of support from CMHT"

My partner came to St Marys due to a decline in mental health. When she arrived she found she had a mental health diagnosis that she wasn't told about, which the Community Mental Health Team (CMHT) where treating her for. She then researched the diagnosis to find she didn't agree with diagnosis, she was assigned a psychologist whom was treating her for a diagnosis that she didn't have. She then asked for change of psychiatrist which took 3 years to do she asked for change of diagnosis which took 3 years also.

She struggled and expressed that she needed help and dissagreed with the diagnosis, she then found out herself that she had autism and wasn't treated correctly by the service.  She was told by a mental health nurse when she attempted suicide that she was a problem and the ambulance needed to take her away as she was causing problems (tried to end her life). Said person spoke to her another time before on the phone and basically told her she was attention seeking because of the diagnosis she has.

When she felt suicidal she was left unsupported she worked with the psychologist, fighting to get diagnosis changed but was unable to achieve any meaningful therapy with psychologist because of this. 

When they sorted a new psychiatrist and a new diagnosis the CMHT decided then to end her therapy with the psychologist whom was supporting her massively with new diagnosis, leaving her with no therapy and in severe crisis. Said psychologist was heavily supporting her because her Community Psychiatric Nurse (CPN) she was just assigned had left. The psychiatrist refused to listen and now her meaningful support and care has been removed and no medication assigned, leaving her vulnerable and unsupported by the service., no other therapy assigned and an excruciating new diagnosis which no one now helps her with,  leaving her to deal with it alone and in crisis. This is no fault of hers that the psychiatrist wouldn't allow reassessment.

I feel it disgusting for a CPN to tell her she was a problem more than once when she was at risk of herself.

I feel it disgusting that her only valuable help she did have  has now been taken away and nothing else is offered, leaving her worse now than when she arrived.

We have been to pals and feel we have been ignored there also. Where do I complain now? As people's lives are at serious risk , especially when she is engaging and willing to work with them for help, but they are offering nothing. .