FIR logged by younger brother

Sir, Three years back (April 2014) FIR was logged by my younger brother under section 143/341/323/504/448/379 against me, my cousin brother and cousin sister. This was logged after minor hot discussion on family's issue. We all were unaware about that even our parents were not aware. Just one month back (May 2017) we got a call from police station. They called me & my cousin brother to come at police station and settle down the pending case at police station level. Since we are unaware about any complain against us, so we went there. As soon as we reached there, after few discussions they arrested and send jail after 24 hour in his custody. Parents came to know about the FIR and asked younger one to settle down the case. After staying 4 days in jail we got released on bail bond. Comprise petition has been submitted by younger one. We got a order letter from court and it is mentioned that the informant & victim are close relative and compromised each other with the intervention of common person and they have no dispute and difference each other. petitioners are quite innocent and falsely implicated in this case and they have never committed offence as alleged in the FIR. Following are the circumstances now I am facing- 1. I am in private job, police case information reached to our office and instructed by management that I can't resume my office till case is not closed (presently I am in bail bond so they do not allow me to join). 2. younger one is started demanding 20 L rupees from me or from our parents to close the case. 3. Police station's SI insist us, pressurize us to call sister and ask her to appear in police station who is working out of the city and got scared after this incidence and she is not ready to appear in police station. 4. Financially I am not very strong, whole family members tried to convinced younger one, but he is not agreed. Kindly guide us what should I do.