Life Insurance Corporation of India [LIC] — refund of money/ paid up policy number[protected]

Address:

Kolkata, West Bengal, 700056

I had a lic money back policy. Since i have not paid premium for long, i would like to take a refund of the paid up money. I had contacted lic branch in kolkata and the customer care executive says that the policy does not exist. What kind of cooperation is this?
Since, i have discontinued my policy number[protected]. I want the paid up money to be refunded to my account.
Please help urgently