Landlord not returning security deposit COVID time

I rented a 1BHK in Bangalore on March 2020. I paid Rs. 1,20,000 as advance amount to landlord in Feb 2020 (Rs.70,000 was given through bank transfer and Rs.50,000 in cash). Rent was Rs.10,500/- per month. I entered the house on March 12,2020 and left the house on March 15,2020 due to COVID lockdown in bangalore. My belongings were still there in the house. Since I was there only for 3 days and due to lockdown the landlord did not give me a rental agreement. In May 2020, I paid a rent of Rs. 26250 for the period of March 15, 2020 - May 31,2020. Also, we informed the landlord we will vacate by end of July and to return the security deposit minus 2 months rent(June and July 2020) which is Rs.1,00,000 to me. But, landlord kept dragging saying that he did not have money, he did not get tenants etc., He also kept ignoring calls. We again forced him in September 2020, and he stated that his father passed away due to COVID and does not have money. Since he was not in a position to return money, on humanitarian grounds, we gave him some time to arrange money. At this time, We also had to keep few of my belongings in the house since advance was not returned by him. Till March 2021, he either kept ignoring calls or asking for time. Now in March 2021 he attended the phone call and claiming that he will deduct the rent for the entire period from June 2020-March 2021 from the security deposit and also asking me for painting charges( I stayed for only 3 days). basically looting my security deposit conveniently. Is there anything I can do without rental agreement? . Please help.