GPO Ghaziabad — loss of nsc for rs 60000

I have lost nsc of rs 60000 purchased on 24.11.2012 from shipra post office which were maturing on 24.11 2017. I have no other information except date nd amount. So plz help me in this regard. I had approached shipra post office regarding the same but got no response there. So plz help me. My name is dulari raina. Add. Is b3/902 lotus pond 2a vaibhav khand indirapuram. Ph. No.[protected]. Tks.