DTDC Courier & Cargo — Did not receive my parcel and its more than a month

Address:

DURGA CHOWMUHANI , AGARTALA , TRIPURA (W)

Its a parcel of medicines for one serious patient, having consingment number d58415876. The parcel had been sent from bangalore 30th may. Till date i did not receive my parcel.
Several complaints and attempts, calls had been made but there was no action taken against it.
Such negligence from dtdc not expected. Such a important parcel. But they are least interested.
Also the tracking site has updated up to 7th july.
After that there is no update