Legal Remedy in case uncle harasses mother and sister unnecessarily

Dear all, Me n my dad lives away from family in gujrat. My sis n mom lives in Indore in 1st floor beside with my uncle aunty.. n downstairs onr more Uncle n my grandmother. They used to threat them several times by stopping my sis to not enter home when my mom was also away from there and doing very bad things like shouting n saying bad words like she is drinking smoking n all on road ..2nd time my sis had some words with my aunty she tried to come over n hit her then my other uncle came n hit her.. that time police came but no action this time i was managing with my family to leave this home n go separately in peice but instead of talking they shouted n try to hit me my father.. in case i also did same police came but no action they are in favour of them because grandmother is 72 years.. so now what to do if they overcome again. thanks..