Postal Life Insurance [Pli] — Not clearing the maturity amount over a month

Address:

Hindi our Post office,Anantapur Dt

Sir,
My PLI policy has been matured on 30th September 2020 afer paying for 10years.
My policy no. is AP-439760-CS. I havepaid the last payment in Aug 2020 and the sum assured is Rs 3, 00, 000. I have submitted my Policy bond with all required documents to concerned HINDUPUR P.O, Anantapur.District, through the Head Post Office, Anantapur, Andhra Pradesh. On 26th of Sep 2020. .As I got the information from the Hindupur PO, my policy details and file has not been found. Some times I had to pay the installment amount with fine. Now, Who is the responsible for the problem and late paying of maturity amount which is not yet paid even after more than one month.
Sir, I request you to take the necessary action and do the justice.
Thank you sir,

Yours faithfully
L.VENKATACHALAPATHI
D.No.5-17-21, Estates,
Sri Anjaneya Nagar,
Anatapur-515004.
Mobile no.[protected], [protected]