Help with my job

Hi,

My name is Morgan, I have Aspergers and I have a job in a bank (call center).

My job is very stressful, and at the moment my life is too. My fiancee lives in USA and I have not seen her since January, and honestly, I do not currently know when I will see her again, I have zero control over my life at the moment, and was off work due to depression and anxiety for the whole of June.

When I went back I had a phased return from the doctor for 1 month. My job refused to respect this and only did it for 3 weeks due to 'business needs'. I had a panic attack in work that week and had to go home. After this I wanted to change my hours of working as I need some kind of routine in my life and my depression and anxieties are worse in the evening.

My shifts at the moment and range from 7am starts until 11pm finishes and it is not good for me. My job are aware I have ASD, and my manager is AMAZING and tries to help me wherever she can. 

They refused my request to have all earlier shifts. They said I can request for flexible hours or go part time. They said my flexible shifts would be refused so I am better just going part time, so I accepted and said to go part time as the hours would be 8am-2pm, we had a meeting with operations manager where I was told this is as good as accepted. Today I was pulled off the phones to be told that they will not allow me to go part time due to 'business need and there are no vacancies for part time'. They told me Friday that it was as good as accepted and for the past 5 days I have felt at ease knowing some kind of structure and routine was coming and now I am back at square one feeling anxious and sad.

Where do I stand with this? I hardly sleep, before and after my shifts I cry because I have no control with my life. My anxieties are through the roof. I have no routine, I have no structure, everything is so difficult and sad at the moment and I don't know how to feel or what to think. 

It took me a LONG time to accept myself for who I am and this is the first job I have been open with about having ASD and what help has it been? No help whatsoever. 

I just need someone who has maybe had some experience with this or some knowledge of what I can do? My therapist was the one who suggested I change my hours and I told my job this but they don't care about that either even though I got my therapist through my benefits at work. The HR department said that it was okay to go part time, but apparently it was scheduling who said no. 

Anyone? :(