India Post — delay in delivery of speed post articles (spa)

I've sent some important documents via speed post to "cheil india pvt. Ltd, gurgaon 122002".
I've mentioned the correct and full address on the envelope and the post should have been delivered on 17th august but the postman without even attempting to deliver it, marked the status as "item delivery attempted addressee can not be located".
Cheil india is a big company, even a 7 year-old kid can locate this address. It's very urgent.. I may lost the deal of rs.64000. it'll be a huge loss to me. The last date is 18th august but my post is still pending. I called almost all the post offices of gurgaon but no one is responding, even the chief postmaster general, officers in the postal directorate aren't responding. They're not even answering the phone call. The phone is keeps on ringing, but nobody picks up the phone. The service in gurgaon is very bad. They are lazy and slackers.
Kindly solve this issue asap.. My consignment no is em[protected]in