India Post — Missing package sent by Speed post

Hi, a package with research notes important to my study were booked on Jan 8th from Chennai to New Zealand. The last update on the system on Jan 23rd is that the package has New Delhi. The Delhi foreign post office says they have not received the package and the Chennai post office say they have sent it to Delhi. The research notes are vital to my study. Would appreciate if the package can be recovered and sent at the earliest to New Zealand.

Regards,
S.Nielsen