DTDC Courier & Cargo — packet loss and no response

I have send courier of medicines from dtdc sec 63 branch. The tracking no is z39524885 on 24th oct 2017. The courier was sent to gurgaoan but unable to deliver due to address not found. I keep on calling preeti who is gurgaon branch but they say dey have sent the courier back in noida branch and told to call manoj mehta, i called mr mano mehta but he always keep my call on wait and said he is unable to contact preeti from gurgaon branch,. The medicines are expensive. Who will bear that expense? I am unable to get any proper response from any person in dtdc its all passing the ball. I am highly dissatisfied, please return my courier back its been 25 days and the courier is misplaced. Px revert me about the status of my courier asap.