I have Acute Clinical Depression I've had it for nearly 3 years,?

I was recently admitted to a psychiatric unit for 8 days due to deterioration in mental state, feelings of Hopelessness and Suicidal ideation, They changed my meds from Fluoxatine 40mgs to Mirtazapine 30mgs, and put me on Diazepam 5mgs 3 times a day, I was self harming before I went in, and now it's gotten worse, I'm in a terrible way, I don't leave my room, I'm Agoraphobic, and all I do is cry all the time, and I hate myself for doing it, So the more I cry and feel down the worse I harm myself, I keep going to the Docs, but they say I'll get over it in time, I'm a complete wreck and don't know where to turn, any help would be great x