Life Insurance Corporation of India [LIC] — lic bima gold policy money back installment not received by me

Hello sir. I have lic bima gold policy no :[protected]. My name is akhilesh kumar mahato. I had not got any money back installments which we're supposed to pay on 28/03/10; 28/03/14 & 28/03/18 by cheque or direct credit in any of my account. While personally visited branch the respective off can't take my complain. He said the amount of rs 20000 each installment has been paid. He said i have to prove myself that i am not getting any amount by all bank account statement submission. I said give me cheque no or valid proof that in which account i got payment. But no satisfied reply from his side. Presently i am working at jamnagar ; gujarat

Pl solve my case asap & reply me.
Thanks
Akhilesh kumar
[protected]
[protected]@yahoo.com