Blue Dart Express — courier delivered to unknown person

Website:

www.bluedart.com/servlet/RoutingServlet

I was going to receive an important
Bank document. On 4th june when i received a call from
Delivery boy he informed that he is not authorised to hand
It over to anyone else. So i told him to deliver it on
Saturday.

Today (6/6/2018) i received a message that the courier awb number was changed and delivered to gaurav.

I want to know why it was delivered to someone else without my knowledge. There is no one named gaurav in my building.

Please confirm the details as soon as
Possible. Innitial courier awb no :[protected] then it was changed to [protected]

This is not at all acceptable and i will take necessary steps in this matter if it not resolved soon. I require my courier.