Landlord Died and new Heirs not returning security deposit

My landlord Died in 2020. Our previous agreement was valid till Dec 2021. All Heirs living out of mumbai throughout 2020 and 2021. At the end of 2021, we asked for new agreement but it was never made. We became parents in Aug 2021 hence we wanted to continue in same flat. In Apr 2022 , Daughter and wife shifted to Mumbai in their flat next to us. In Jul 2020 she asked us to vacate flat in one day without any notice period. I asked secretary that I need one month notice atleast, he said that you don't have valid agreement and you are trespassing the society. He had sent 3 notices to family also that they can't keep tenants without valid agreement. Suddenly after paying rent (escalated) , I came to know that we are trespassing society without any written or verbal communication. After continuous followup (as I had 10months baby) we felt completely appalled a d harrassed by late landlords daughter. She agreed for month end notice which was ok with us. Before leaving we kept following for security, which she delayed till last day. On last day she visited flat but told that security will be given in 5 days. We had booked our new flat , so we had to move out. Next day she is charging me 60k penalty for renovation of house. There is not a single damage in flat. She is asking to paint the entire house with her own contracter only She is taking full advantage of our absence and harrasing us in various forms. We can't deal with her as she screams and shouts in conversation without any background knowledge. Ever since she has moved in society (our next door flat) she is fighting or screaming at security guard, Courier guys, Maids everyone. At the time of vacating she wrote name of her mother in the vacating form. While all this while she was taking the rent in her account ever since demise of her father. Her brother stays in US. we have never met him. What should we do. We have paid 1 lacs deposit and now she is not returning anything.