India Post — lost of post office pass book

Address:

18/20,vaniyar street, behind ramar kovil, 635109

Respected sir / madam

I am L.R.Tharani resident of hosur, krishnagiri district, tamilnadu. As i lost my and my daughters H.Manushree pass book of post office before three months, struggling lot to get it back. I am trying in all possible ways, no way usefull... In office they asked me to get a complaint note from police station in station they said register a file in online. Please priovide me necessary info to get my pass books back.