DTDC — Late delivery

Address:

Aurangabad, Maharashtra, 431001

Courier P33948019 done on 08.10.2015 from Aurangabad had reached Kharghar (Navi Mumbai) on 16.10.2015. Courier should be delivered with 48 hrs i expect.
After almost 1 week. I want to know the reason for late delivery.
We belive DTDC is best, but today i had very bad experience regarding the same.
I had to follow up why not received, but no respose.