India Post — Speed post not delivered to the assigned address

Address:

New Delhi, Delhi

I have sone speed post from zakir nagar s.O new delhi but i didnot get the item in darbhanga.I have posted some expensive item ..I have done post on 17th september but update is showing that it is in nsh new delhi on 20th .Kindly deliver my product to the desired location. My speed post no is- ed[protected]in and the destination pincode is 846004.I have given the address mustafa reza s/o- shamim ahmed head post men head post office, lal bagh darbhanga, bihar pincode-846004