Regarding crime

We have filed a case of domestic violence against to my husband and in-laws for 1.Dowry, Demanding to remarry my younger sister as second wife or else to remarry some other rich girl as second wife. 2. Harrasing me by installing cctv cameras in all rooms including bedroom. So that case was been filed under another crime. 3. By morphing mine and my husband marriage pics with my husband's elder brother and his wife pics. and submitted to govt.(Registered marriage) that m not married infact, on the same day instead of me, it was his brother and his wife got married for Indian marriage certificate. My husband's Brother is settled in Australia(Citizen) Govt Employee in Australia. While his wife is Malaysian. My sister in-law settled in USA. Came for our marriage, Harrased me and went off to US after sending me to my parents house. We are now fighting for justice. Since sept. 2016 We filed case in Hyderabad, But they are managing everyone by money and influence of Ministers. Even they are blackmailing everyone who is in our favour. Even we are getting calls to drop out and leave the case and get compromised by giving their money. We are not getting any idea how to proceed.