My friend is a lecturer in Odisha, India and his Principal chews tobacco inside the college premises. How and where to lodge a complaint?

My friend is a lecturer in Odisha, India and his Principal chews tobacco inside the college premises. How and where to lodge a complaint? The shameless Principal gives no heed to even my friend requests in writing not to chew tobacco and Spit in the college premises. Instead when my friend requested thusly the villainous Principal instigated other staffs ans students to Spit on mad at my friend whenever they come across him. Where can my friend complain both online or offline?