Indiapost.gov.in — delay in delivery

Hello i register an complaint on indiapost.gov.in
Tracking no : ed[protected]in
Complaint number of indiapost : [protected]
I am ship an speedpost letter to someone at 12 march 2018 but still speedpost letter is not delivered to him soo i am register an complaint on indiapost portal but there is no update of tracking result soo please update this tracking number as soon because its very important letter which i send to him.
Thank you
Regards by
Rahul