House owner not returning the leased amount

Hello Sir, This is Anu, i'm residing in Bangalore. I've been living in a leased accommodation for the past 5 yrs. The contract of the lease amounting to Rs 5 lakhs had a tenure of 2yrs which was completed on the 30th of sep 2016. and then I paid 1.5 lakhs making a total of 6.5 lakhs and renewed for another 2 years which is till 30th sep 2018. the tenure completed and I gave 6 months advance notice for that I will vacate the house the owner agreed at that point of time, the contract is also expired. The owner however now states that she has no money to repay my lease amount and is asking me to wait until she finds another tenet to fill the house. I have been pushing her for returning my money from the beginning of Sep 2018, and she just keeps giving me different dates stating she'll return my money, but on the day, she come up with some reason to push the dates forward again. Unfortunately, the last time we spoke, she assured me that she will give me my money by the 15th of June 2019. but she again came up with excuses. My owner now says nothing has come through and she can only pay me my money once she gets someone else in. I even tried telling her that i will file a case for legal action to be taken and she revolted back asking me to go ahead, she even threatened me stating that the case will go on for years and i'll never get my money back. I was being nice and dint want to create a scene, but this owner seems to be taking me for a ride. This owner is a widower, and a mother of 2 a boy and a girl both are married and settled. The boy and widow mother was staying together in same building. but the boy has now gone separately few days before the bank peoples came and sealed their house. My owner's daughter and son in law have taken 3.5 crore lone on the building and not paid back to the bank, on 11th October 2018 the bank peoples came and sealed all the houses in the building, later our house owner convinced all the tenants to give in writing that we will vacate the house in 10 working days and requested to open our doors. on receiving the letters the bank people opened our doors but since then owners house and a shop in ground floor is sealed. she now stays with her son and daughter and keeps moving. She has no source of income she owns a piece of land next to the building. there is another person who has filed a case claiming that the land of the building is his. a separate case is going on. he also sends people and threatens all the tenants to vacate the house. Let me bring to your notice, that although this lady is a widower, she is not subtle or approachable, she harasses us, shouts on top of her voice to make a point and is very abusive when i try to talk to her. She doesn't answer her phone calls when i try calling from my number and tries and avoids confrontation as much as she can. The contract expired on 30th sep 2018 and was renewed for 3 months till Jan 2019 currently that is also expired. Please advice.