DTDC Courier & Cargo — misplacing of courier packet

Address:

Lajpat Nagar, Gautam Buddh Nagar, Uttar Pradesh, 201305

Z[protected] this courier is booked on 6th jan it is showing delivered on 11th jan, however, this is still not delivered.
Again and again wrong information is passed on by dtdc representative. Sometime they say it is delivered but they are not able to give the contact information and address where the packet is delivered.
From last 3 days i am continuously chasing with the dtdc.
I need to file a case against dtdc and need a compensation on giving wrong information and their casualty in delivering the packets.