India Post — Documents undelivered

Address: Gurgaon, Haryana, 122011

Website: www.indiapost.gov.in/vas/Pages/IndiaPostHome.aspx

I've sent a speed post on 11th Nov 16 to USA with very important documents.
However, till date the status reflects as documents to be received at Newyork USPS.

I've registered a complaint on Indian postal services site but they've casually replied saying issue has been highlighted to concerned airlines.
The responsibility for delivery lies with Indian postal services as money have been paid to them and not to airlines.
20 days and I do not have any clue when the documents will be delivered.
They do not the implications of the non delivery, worst decision ever to rely on Indian postal services.