That is exactly how I anticipated this situation was going to turn out. I think anyone who is HoH or Deaf has gone through similar situations to different degrees at one point or another. I am just too old to deal with it any longer. I cut out the middleman and go straight to the top now because yes, I have experienced what you have described before. My immediate supervisor ended up getting fired.
I don't cry "discrimination" over spilled milk. When I claim it is happening, it is after all attempts to resolve the matter have failed.