Human Rights, Unlawful Confinement, Forced Signature, Forced Nudity

Respected Sir/Madam I am a 28 year old resident of Kolkata.My parents put me in a rehabilitation center against my will by calling the center and making arrangements , on the 8th of March 2021, 5-6 men came to house and DRAGGED me from there,SHOVED me in an ambulance and drove me to the rehab.There I was asked asked to sign a consent form and upon refusing , two individuals including a counsellor of the rehab GRABBED my hand and took a thumb impression..While in the rehab I was forced to be BATHED FULLY NAKED by ANOTHER INMATE as I being a 28 year old was deemed incompetent to take proper baths by authorities . The counsellors and my parents decided how long I would stay I HAD NO SAY WHATSOEVER. My question is .. how do I go about filing the lawsuit.