when you are sure the signatures are forged, better lodge a complaint with the commissioner /SSP of your city. Appraise them of the facts. send a RTI application to LIC (insurance co) to get all details of your payment, viz cheque nbr, date on which mailed, your discharge certificate/surrender oif policy document, if any. From the Bank get all tyhedtails viz. KYC norms under which the account has been opened, and in case the account has been opened with thrid party introduction do get the same as well. When as account is opened in any bank, its obligatory on the part of the bank to mail you a letter confirming that your acccount has been opened with them, did they mail you any such letter???? better implicate the sataff members of the Bank as well in your FIR/Compliant with the Police, the matter will get soted out soon. Best of luck. Normally LIC doews not issue cheques there days without mentioning the account holders number, so that a new account can not be opened to misuse the cheque, seek explanation from LIC as well,