India Post — pli death claim not found

Address:

Village: Khirighat, Post :madwa nagar, Distt :Basti, state: UP, Basti, Uttar Pradesh, 272001

Hello sir,
My name is ingla singh. My husband late shri mahendra kumar singh was a government employee in indian railways on post of station superintendent at bhabnaan station, basti. He had purchased a pli of rs 5 lakhs with policy no. Up-343023-cc in his service period on 13/02/2015 from head post office, basti and paid all the premium on time. My husband has been expired on 10/03/2017.
After that i had applied for the claim of my husband's pli on 07/04/17 now two year passed away but there is no payment and not any single information yet given to me by post office about what they are doing. I also tried many times to collect information about same from post office but i can't find it usefull. I am feeling helpless now, please sir help me regarding this situation. I am a single mother of two children now 🙏
Thank you sir