Uncle harassing what action can be taken

We stay in one building he (uncle- father's younger brother) stays with his parents on the first floor and me my dad and my mom stays on the second and rest of the building have been on rented by us. My uncle will get drunk or come drunk and intentionally catch our tenants not allowing them to pass, when we come to their rescue he turns violent and tattacks me and my dad. This will end when we call police. This whole incident has occurred multiple time thus we have multiple NC (complaints) against him. This time we want some kind of strict action against him so I am seeking legal advice, going to police didn't help as they refuses to take any action as it is family matter. His father and mother, sister, my father my mother has done police complaints against him during last 7 years. Land belongs to my grandmother which is not inherited and the building is built by my father. We are Hindu. Charges police put on him are- 504,506. 510. 323,504,352.