India Post — Consignment not yet delivered

Address:	Daman, Daman and Diu, 396210
Website:	INDIA POST

I have sent a cover by speed post vide tracking no eg[protected]in dated 11th aug 2016 to my son's college in jalpaiguri government engineering college, but till now the consignment has not yet delivered. The cover contains original receipt payment of college fees, irctc train tickets and sim card. Please inform why after 13days the consignment has not delivered.Is there anything wrong on my part or i have not paid speed post fees/paid lesser amount of fees.