Owner Outrageous Demands

I have given a one month notice period, by mailing the owner and communicating him orally over the phone. For that movement, he started to say, either bring a replacement, or he'll charge a lot from advance, and even more than that. He also tried to confiscate my stuff which was still in my flat, but somehow with help of friends, I got my stuff out overnight. Now I am expecting him to show up with many unnecessary expenditures which he will try to impose on me, will try to take over my 50,000 Rs. advance, and will demand more. I've been living there for two years, and all there has been an oral agreement between us. How is my situation in this case, Can you please suggest to me what next step should I take to ensure minimum harm.