False cheque bounce case , thretened by police officials

11 months ago

person blackmailed and extorted me through police officials in the police station, took my 3 cheques & made a false agreement in the presence of police saying I told him to transfered money to third persons account, there is no any transaction between us. he transferred money to third person's account number, there was no evidence that I took the money, but he managed the policemen to threaten me, forcefully to make the agreement, I make stop payment request in bank for those cheques. but he sent me a notice of cheque bounce and filed 138 against me. when this incident happened suddenly I filed a complaint against them to CP office, but no actions were taken by them I also filed 153(3) , and the court ordered to investigate the matter, but the accused police filed a revision under 397. my question is how I can defend myself as this is false case I didn't take him money, no transaction was made by him. so what to do now?