DTDC Couriers — parcel not received

The parcel was not delivered by the courier service. The parcel has come to the dtdc branch sec -17 gurgaon and after giving the information it has been sent back to sec 14 office. When i approach there they have already send back the parcel to delhi office when i have asked to delhi office after 2 days they have told it has not been recieved in delhi office. I have called several times talked to different officials but they have only provided me just another contact no but no one has given me the proper status of my parcel.

Consignment no-B55123178