Grandmother filed false case against son & wife for attempt to murder

My grandma filed a false attempt to murder case against my father and my mother. When the actual situation created I am there, and my age is 13 on that time now I am 18years old. Actually that day my mom going to bath at 12:30/1:30pm like any regular days, but suddenly my uncles or my father's brothers started shouting and also using slangs on my mother. When she protest on that my uncles attack on my mother. And I'm also mentioned that on this time my father are not there at home I'm very scared and called my 'Mama' to come to protect my mother. After all that we go to the police station and filed a FIR against my grandma and uncles, and police didn't take any FIR from my grandmother. But after that go to court and filled a false attempt to murder case against my mom dad and against my mom's family. What should we need to do now? and one more thing this is a case of 2013 and now 2018 and the case is on going.