Dg Shipping — to get the cdc dispatch number

Address:

Kolkata

Sir,
I am gaurav kumar. My cdc no is kol117622. Place of birth was not mentioned in my cdc. For the correction of that i have sent my cdc to kolkata mmd with all the right documents. They have sent the my cdc through speed post on the 26th of june 2020. But cdc has not reached to me till now. And i have asked many times for the dispatched no to the shipping master of kolkata. But they are not giving me the dispatch details. Sir my shipping company has planed the vessel for me, they are asking me to get the cdc as soon as possible.
So sir please help me to get my cdc back. It will be my first ship. Sir please do something for me.