Andhra Pradesh Police — Not taken action and not file Charge sheet from 4 years

Address:

Mangalagiri, Andhra pradesh

Dear sir Iam given complaint on 18.05.2019, FIR no: 227/2019 but no action till the date, Iam given a complaint, my sister harassed by her husband then she is hanged with saree she is dye. at the time Mr.T Naga raju has sub inspector in Mangalagiri RURAL Police station, they are not given any papers (as like NO FIR, Panchanama, Postpartum report copy) are not given, iam asked copy against complaint, he demand money (50000/-) for Xerox copy, and post marturm time he demand 80000/- for postpartum, so please take necessary action and please file to charge sheet send case to court, and please give papers.
So many time iam going to police station complaint and asking about the case status but not responding & iam complaint in spandana but no use please help me sir