Rental issue

I am a tenant in the city of Bangalore. Had got into tenancy last June 2019 for Rs.10,000/- per month for 1Bhk. Later after the expiry of 11 mths agreement, new tenancy started from May 2020 rent for Rs.10,000/-. As per the old agreement 5% was the increase in the rent every year mentioned. But the owner has increased the rent to Rs.12,000/- although we pleaded saying we lost our job & having difficulty in managing with our day to day requirements. Because I was not in a condition to pay 12,000/- rent decided to vacate the house & go for a cheaper house with 6,000/- or 7,000/- rental. Informed orally on the same on Aug.2020 & he is going as per notice period to charge Rs.12,000/- for September, October & November. Since we do not have the money to pay the rent have asked to deduct the rent amount from our advance amount of Rs.1,00,000/-. The owner says he will deduct the amount of Rs.12,000/- for the 3 months plus Rs.15,000/- for painting exps. & repair charges if any. Sir, I was working as a Teacher & still no job & even my husband is looking for a job, we need to pay school fees of Rs.42,000/- for the year. In this scenario, I begged the owner to help us but not listening & harassing us literally. How will I proceed further in this case, please help!