DTDC — Courier delivery not informed

Address:

Kamrup Metropolitan, Assam

I booked a courier from Guwahati (Tracing no K[protected] on 2/2/15 to Davangere, Karnataka. I have been tracking the courier online.On 7/2/15, the tracking showed the courier had been delivered. But when I asked the person to whom the courier was to be delivered, she told she has not received it till then. If the courier was received by someone else, it was not informed to the person to whom the courier was addressed. Please look into the matter and inform me, as some important documents were there in that courier. Thanking you, Dr.Abhijit Kalita