"Lack of manners/ audiology"

My husband is totally blind and visited the audiology department earlier this year due to his hearing aids not working correctly. The technician that called him in allowed the door to close in his face, my reflexes were quick enough to avoid my husband sustaining a serious injury. Once in the room the technician did not introduce themselves, did not listen to what my husband was saying. My husband was told there was nothing wrong with his aid and has he had not had them 3 years he could not be fitted with new ones. When my husband said that the volume control did not work he was told that it was due to him keep altering the volume. When my husband commented that he was having problems keeping his balance due to being blind and the lack of hearing was making his balance worse he was told his ears had nothing to do with his balance. My husband was then informed that he had been in over his allocated time, we were late going in for the appointment although we arrived early so has not to keep them waiting. My husband was very upset about his treatment and consequently had an angina attack at the thought of having to go back to be treated with the same degrading manner. My husband has struggled with his hearing since January, he is reluctant to go to the Kings treatment centre for further appointments in this department. He now haves an appointment at London Rd but according to the appointment letter he is still unable to be fitted with new aids because he is still in his 3 year journey. Does this mean that if you have a disability you receive 3rd rate treatment.