You might call or email those questions to state or county housing dept?
Or email a lawyer about it? discrimination??
ADA might be able to help? http://www.ada.gov/

It seems if someone has a medical reason they should be able to get a fee break or move without paying fees again..

one place I read says get your lease agreement and read it yourself to be sure they aren't feeding you a line.
there are usually special circumstances that are allowed.

Did you contact the higher ups to talk/explain your circumstances to them.
You might have more luck than with manager esp if you have a note {from dr/drs} with your dx and limitations to forward to them..