India Post — Speed Post Parcel thats lost in transit for more than 60 days now.

This is regarding my India Post Speed Post parcel which was shipped on 18 th May, 2023 from Reckong Peo (EE[protected]IN). However, it’s been more than 2 months now since my parcel hasn’t made it to its destination in Mizoram. I have filed a complaint in the post office both online and offline but I am yet to receive any reply from them. Kindly help! The parcel contains a woollen coat, it’s a client order.