Kidzee School — rude behaviour of principle. slang used by her

My son study at kidzee kalitala. My complain is regarding principal mrinalini ranjan of kidzee kalitala. Her behavior is too much rude. She even some time used bad word on us.
We just don't tell any thing as our asset go there. She always stay with angry face. Always talk in a rude way. She has mental problem. Many teacher has left that center in 1 year because of her. She even used slang word. I would request zee group please look into that center and take necessary action. Please stop running this kind of center. It will create bad image for kidzee organization. I have admitted my child to take feedback of kidzee group.