Landlord entered my Bangalore apartment without permission and changed locks, what can I do?

I live in a rented apartment in Indiranagar, Bangalore. My landlord entered my flat without informing me and changed the locks while I was at work. I have been staying here for over a year with a valid rental agreement that is still active for another 6 months. I have always paid rent on time. I feel violated and worried about my belongings inside. I tried calling him but he is not responding. What are my legal options to address this violation of my privacy and regain access to my home?