Illegal possession of my car by my family

I had married to a girl of another caste in 2017 , against the wish of my parents , my parents had also prisoned me at home for 2 days and snatched my bike and car keys my license and everything after 2 days when i managed to go out from the house i went straight to police station where i lodged a complaint against my family and married to the girl i want and after that i family had lodged complaints against me that i have tried to kill my nephew and also took money 10lkhs from home and jewellery worth 5lkhs , my family didnt returned my car bike and also took my RC from showroom by doing my fraud signatures , in 2019 i found my car near a non parking area near away from my parents house and as i am the owner i towed it to showroom and got the lock changed now they are torturing me to return the car , i am paying all the loan and m the owner of the car , what can i do about it , can they do file a complaint against me in anyway because m the owner of the car and paying all the loan from my salary . Please suggest what to do??