I am reaching out for some help and advice. As stated earlier I believe our HS Basketball Coach is a silent bully that uses power and passive aggressive actions to manipulate the players. I have 2 sons that are currently a junior and soph. Among many other “symptoms” he has put his hands on my oldest son (now a junior) in a fit of anger twice. He has dismissed both events as no big deal. We have contacted AD and principle about the issues and they state they have taken care of the incident and “don’t see” any of what i have stated. (NOTE: The school has never interviewed my oldest son to get his version or to see if he is mentally/emotionally ok)
It has gotten as bad as both my sons are planning on filing a formal bully/harassment claim against the coach.
The coach got wind of this news and has now threatened to file a harassment claim on me.
I have sent a lot of emails to the AD, Coach, and principle , begging, pleading, for someone to protect my sons. I gave them PCAs information to at the very least give the coaches education on the damages there coaching style does.
All of this has falling on deaf ears. Now (a parent trying to protect his kids) being threatened with a harassment claim.
Have you ever heard of this?
Do you know of any resources that i can turn to to help?
Do you have any advice?

NOTE: No email was threatening in nature. At no time was i asked to stop emailing. All emails were truthful and with the intent of protecting my sons.

Any advice, direction, or information would be greatly appreciated.