Thank you all for your replies. I have kept the details of what happened so that I can raise a complaint once I feel strong enough, as I hate the thought of it happening to someone else.

I have input fro psychiatry and psychology so I'm also going to speak to them about it (unsure how useful it'll be). I am lucky enough to have a fantastic mental health charity in my local area which runs drop in sessions as well as one to one appointments. This charity has helped my more in the last 2 months than the NHS mental health service has in the past 3 years.