As stated above, your first port of call is to take it higher within your Wing. I'm unsure from your post how high you've taken your grievance, if only to a Sector Commander then your next port of call is either the WExO or the Wing Commander.
Also, don't forget that some of the people in our organisation that have the most training in this area are the Padres. Have a serious think about talking to your Wing Padre about the issue, who may be able to offer advice in confidence, and it won't attract the telling off that you say you've received hitherto.
If nothing within the Wing works, then as stated, you are well within rights to talk to your Reg Comdt about the issue.