sorry if you seem to think my answer was rude, but having ms does not make houses easier to come by, and does not make it more likely that farmers will look at a "houses wanted" ad
I am not "jumping to conclusions" as you think my answer still stands. you say "we" so get the other person in that we to do the ringing round.
I think that unfortunately you are narrowing your market even more by adding that you need a place big enough for a wheelchair, or with a downstairs loo or with level access to the entrance/exit. i just think that being realistic, you will have to lower your expectations or requirements. Have you tried letting agencies?
you seem to have a chip on your shoulder, seeing meanness when it is not there. Had you given the information you just have in your first post, my answer wuld have been the same (except to get someone elses to do the ringing)