Property adopted by 3rd person

Dear Sir, I am Firoj uddin Choudhury. My address is Village-Narasingo pur, PO-Barabainan, PS-Madhabdihi, and Dist –Burdwan. West Bengal-713421. With due respect I would like to inform that due to my work purpose I bound to stay outstation. My old age parents are staying at home. From my childhood I know that our area (Narasinghpur) has a land dispute. My negober are not agree to solve that property by local surveyor (Amin) for so many times we requested them (our residential house also their). For that property who is actual owner we don't have proper documents. It's belongs to our old generation & now they are forcly making house on that area. My father said it's belongs to us. Basically we are non political & police are their hand due to political power. Actually what happening any time they are not agrees to come any solution. Till date we could not able to protest because my father very introvert type person and not so talkative and afraid from such kind of clash as these people are basically rowdy type. Till date its continues like this. Pls let me what can do at this movement.