Hi Audrey,
Sorry to hear your problems at work, Ive had a nightmare since I went back in September. Have you contacted Access to Work.
I had to do this myself, if you ring them, they will send you a form out to complete and then they will arrange for an assessor to come into your workplace to do an assessment.
If you haven't already done this the telephone number is 01419505327, although it might be different depends on what area you are in.
They are really good, what type of work do you do?
Keep in touch
Love Michelle x.x.