Life Insurance Corporation of India [LIC] — Problem of name change

Address:

LIC office. Pathanamthitta Kerala India. 689645.

Hi
My son has a LIC policy and it matured when he turned 18 yrs. He got got an amount of Rs 50000/- and it is not debited his account as his name is changed. Currently he is in Australia and he has a legal name change certificate from Australia, I am happy to provide that name change certificate. But from the office in Pathanamthitta, Kerala, India are not accepted that certificate and they declined to proceed the amount in his account . Kindly advice a solution for this matter
Thanks
Sheeba Shaji .
Previous Name of my son. Muhammed Raziq Shaji
Current Name .Raziq Shaji
Policy Number.[protected]