[Resolved]  Indian Postal Service — Tampering of mail box

Dear forum,
Being a student in the US, I saved my hard-earned money and sent my parents a parcel from the US. It contained nuts (pistachio and walnut) and chocolates.
The box was sent by United States postal service.
After reaching India, the box was opened and all the nuts were taken away. The item description that was pasted on the top of the box was torn away and the box was mailed to my parents without any nuts.. not even a single one! The whole packet was just taken away unashamedly.
Such an unscrupulous behavior on the part of the Indian postal government is unpardonable.
Please let me know how I can pursue this case further.
I'd like the officers involved be punished and I be compensated.
Look forward to hearing from you.
Thank you!