In my experience universities are massive bureaucracies. The more you agitate the more they push back with extreme malice. I have personally seen friends being treated far worse than what you have experienced. We often hear of nervous breakdowns, PTSD, etc from the student counseling services.

My advice may be coming too late. In situations, such as yours, it often helps to personally meet with the persons involved. Face to face contact eliminates the distancing effect of emails and of course removes the interference from spam filters.