first you have to follow this procedure
1. call to postal service of india and get the details of your article(parcel) parcel no. from indian post
2. ensure whether is it air mail or port
3. with the parcel no. and your tracking consignment number you have to contact indian postal forign exchange and custom
4.then you have to contact chennai custom

for contact number of all just google it
you will get
i too did the same
since i have not saved the number
i could not able to give you