What can i do if one retired army officer is teasing our society members, children,and ladies. I am

What can i do if one retired army officer is teasing our society members, children,and ladies. I am just 14 years old but you can tell me. And i will tell to my society members sir. We have done police case also but police can't take any action on him. Because he knows so much officers,commissioner and etc. some times he is teasing children also.