India Post — Parcel stolen or lost by India post

Address:

kharguli, Ganesh Mandir, House Number 50

I ordered a toy for my son from Russia, last month in July, and it reached India on 16th of July, after that the customs cleared it and sent it to Guwahati airport.

From Guwahati airport my toy never reached to my home, and when I contacted the Guwahati Post office, they said they couldn't trace it because it might have been stolen during customs or in the Guwahati airport.

That item cost me 3000 rupees for my son, please help, how can someone steal a toy for kids. I need a full refund either from KOLKATA customs or India Posts.

This is my tracking number RR[protected]RU, please help.