School owner took my mobile and not giving salary too..

I was a teacher in a school. Students had contact numbers of teachers for certain problems. I had conversation with students. A student of class 8th used to call me bro. Once after she used some abusive words, i told her not to speak and she forced me to tell the meaning of those words.. after i told her.. My whatsapp was used by principal of the school and all the chats were transferred by him between me and other persons.. he blamed me that i was misguiding that student and took my mobile phones(iphone 7s and redmi y2), claiming that the girl's parents have gone up for further investigation and a complaint has been filed. The incident happened on 11th july. Now after i got yo know that the school was faking the news. When i asked them to return my mobile phones. They are asking me to pay 40000/- to return my mobile phones. The principal even mailed my oersonal chats and data to his laptop. Please help me regarding.. i have been through lot of harrassment in these days.. mentally disturbed because of that case.. i even dont have a bachelor's degree and still he asked me to teach 10th board class.. Help me regarding.. please sir..