Regarding Open Parking Lot

Hi , Im resident of Pune for past 16 years where I saying. I have a open car parking lot allotted to me when I purchased the property from builder in 2005 & also have the agreement on the same. Recently, the housing society where I live are planning to built cosmos pit for disposing wet garbage, and they intend to build adjacent to my parking lot and the only way they can dump their garbage is via encroaching my private parking. I had a discussion with the Chairman of the society suggesting that they can look for an alternative spot for building the pit, ensuring that it will not cause mutual inconvenience. Also there is a possibility that while dumping the garbage, it could unknowing damage my car while dumping the wet garbage. But they are not relenting. I told him causing any inconvenience to residents is something society has to always take care and there is always a way to find the way, but they are not listening. Can you please advise me for any legal advice on bringing a stay on the same or any way to avoid it? or best way forward? Thanks Vinay