India Post — delay in delivery of important educational documents

Dear sir/ ma'am
With due respect, i would like to inform you that there is a parcel of mine from the asian institute of technology, thailand which contains very important documents for my career and higher studies. The consignment number for the parcel is ee[protected]th. As the deadline is approaching for the application of my higher studies, i need those documents within two days. It is very urgent. I have been tracking the parcel since day 1 and expected it to be delivered by this week. But it seems the parcel has not been dispatched yet from the nsh kolkata.
Therefore, i request you to process my parcel as soon as possible or else my career and higher studies will be affected negatively.
It's a humble request to the authority to do the needful and deliver my parcel as soon as possible (By this weekend). I will be grateful to you.
Recently i sent a mail regarding the inconvenience to the respective authority bearing the email id (Nsh. [protected]@indiapost.gov.in) but had not got any response yet.
Kindly look into the matter. Thank you.