National Insurance Company — Not pursuing my claim

Hello, My Name is Manik Lal karnani, My Customer ID is [protected], I have a joint Policy with My Wife Lata Devi Karnani. She Has Expired on 13th of July'2020. After that i have submitted all the documents to the officer name Mr Abhishek Sen.. he again and again asking for something or the other.
i have submitted Discharge summary and death certificate copy which we have received from the hospital but he is not persuing our claim and his behaviour is also not goof and professional.
i request you to please look after this