Blue Dart Express — My Product is not delivered but shows as delivered

Address:

Jawahar Navodaya Vidyalaya, Pukpui, Pukpui, Lunglei.

My name is koushik, recently I ordered a gold chain from Kalyan JEWELLERS online it was supposed to be deliver through blue dart on 12/01/23 but that day they didn't delivered my product at 9:30 PM they send a message that your product is delivered.
I didnt receive any product but in the tracking it was showing as it was deelivered.I try to connect with customer service and they said it will be delivered tomorrow but unfortunately still now I didn't get my product.
My blue dart tracking id is -[protected]
Please take necessary action
Koushik
[protected]