Life Insurance Corporation of India [LIC] — non payment of matured life policy no[protected]

I submitted my claim on 27/03/2018 (Received acknowledgement) against matured date 28/03/2018. The authority informed / acknowledged through s. M. S. On 05/04/2018 and assured for payment shortly. They further sent a letter for acknowledgment of bank details of my sb a/c dt. 28/03/2018 which was received on 05/05/2018. Still payment is due.
I am an 54 years woman with cardiac desease waited for matured payment to meet my financial commitment but in vain.