Owner not returning my security

Sir, I m from madhya pradesh and currently living in Delhi. Here I m preparing for upsc exam. Upsc exam this year going to held in 16 June so earlier I planned to give exam from delhi and then vacate the room. But the problem comes in the month of March. My ro rent is 10000 and I have deposited 10000 as security amount. In the month of March owner asked for Rs.500 extra and I said why I should i pay u extra if we have rental agreement for 10000 so he says give me Rs 500 otherwise vacate the room. He(owner) said i m giving you notice period leave the room next month. Later with discussion with my parents I decided to give Rs.500 because my exam is just 2 month ahead and I thought its not good for me if I vacate my room before a month it affect my Preparation. I m preparing since last year and I don't want to compromise anything so I give. Then comes next month (April) he again asking for Rs. 500 extra then i refused to give so he says vacate my room. I have discussed my parents and my parents says come back to hometown and prepare from here. So I agree to vacate the room despite my exam is ahead. My owner is not happy with me and he started bullying me and forcing me to put some piles inside my room. I refused to enter so he entered my room in the night and started forcing me and he pushed me so I resist. He teared out my tshirt then i ran towards police station. Police men came and help me. In a police station we settled the dispute and and came at a conclusion I will vacate the room. Now I have packed everything even I sent my notes+books from bus. Yesterday I asked for my security and my owner went to their hometown and now not picking up my call. Yesterday afternoon we talk and he said wait for few hours and I will return your deposit. I said okay.. after that I m continuously making a call and having no response. I have rental agreement everything mentions there about rent. Please help me as soon as possible