DTDC Courier & Cargo — Package still not delivered after repeated complaints & follow up

Address:

Gachibowli Collection Center Hyderabad

I have been calling up DTDC call center & raising complains about my package . Tracking #K38882284 past 20 days but no response from them . The agents give me a time of 24hrs but nothing is happening. It shows up as delivered but I do not know who the agent has delivered the package to as I have a building of only 8 flats & I have checked with all the residents & the guard but nothing has arrived . The package was sent along with some other documents on the same day . The only difference is that I used 2 different courier service . Blue Dart & DTDC. Blue Dart courier has arrived but DTDC package is gone up in the thin air . I need a resolution ... ASAP