RH051605235CN air mail via china post on 9 sep not rec in India till 2 oct

Tracking status of RH051605235CN
track-chinapost.com Shows
Received by China Post Shanghai India 12.9.14
Export Security Scan Shanghai India 13.9.14
In Customs-Control warehouse Shanghai India 14.9.14
But Today is 2.10.14
Why the parcel is not dispatched after 18 days till today
I am unable to contact china post
Kindly guide