House owner is not returning the deposit amount to tenant even after leaving the house

I have rented a house in Andheri, Mumbai. The rent is RS 26,000 and the deposit is ₹1,00,000/-. The agreement was done in general terms and conditions but the owner added one line saying "the licensee agrees to collect the deposit from Licensor only after a new tenant has occupied the premises". I have vacated the house within three months because of lots of issues and wrong doing of the owner, like, they have not paid society dues for years (which resulted in disconnection of water supply when I was staying there), they have not paid the previous tenants their deposit back. Now they are not paying me my deposit back until they have some new tenant. This behaviour means there are no tenants interested to take her house. Moreover, they are staying there on their own and I don't think they are interested in renting the place. They are planning to sell the house ( I have shown the house around to some clients during my stay). If they sell the house and leave without paying me, I have no contact details (apart from their current mobile no) or leverage to get my deposit back. Please guide and help me to get my deposit of ₹1,00,000/- back