A SC/ST doctor levelled false allegation against my family

Hi, Im really disturbed and devastated with the kind of problems my retired patents are facing due to an egoistic uncultured doctor. There has been lot going on between them due to illegal construction of box by the doctor in our flat area which is already pending in court..The doctor kids were playing diwali crackers in front of our flat doorstep to which my dad opposed and asked them to play down.. reciprocating to that the doctor started verbally abusing my dad and threatened him to kill and put in jail if he doesnt stay silent. My dad did revert back with same bad words.. in the meanwhile he came with iron rod and smashed our window panes completly .. my dad narrated the whole story and filed a police complaint in the police station.. my parents are 66 and 60 yr old and living in fear.. The doctor has in return filed a case against us saying my dad held hands on his wife and pushed her and made bad comments on him being scheduled caste . And my mom was accused of verbally using bad words. So they have filed case of misbehaviour with women ( his wife) and abusing his scheduled caste.. please advice us what is to be.. please we dont have any influrnce in govermnt sector or polticians... i need your help.. Thanks, Priyanka