[Resolved]  Flipkart — Item not received but showing delivered

I had ordered luminous redcharge 18000 150ah battery on October 5th.
The orders placed are -
5th October

The delivery date as promised by flipkart was 18th October. After placing the order, i have been requesting flipkart to share the seller details or at least request the seller to deliver the products earlier than the promised date.
I had done full payment of the products with my credit card.

The products are not yet delivered still but reflecting on their app as delivered on 7th October.
Today is 21st October