DTDC Courier & Cargo — shipment missing

Address:

No 17 Kamaraj Street Tmp Nagar padi, Chennai, Tamil Nadu, 600050

I have sent a shipment with tracking number c00531841 to mumbai with pincode 400051.
It was booked on 13th dec. Now the tracking shows it is delivered on 16th dec. But customer says it is not delivered. And they have updated a fake status... I am not able to contact the delivery centre also. They are not picking up the calls. This is the 3rd time i am facing this type of issues which cannot be encouraged anymore... Please do the needful asap and revert back.

Customer full address:
To
Saba qureshi
23/aa mohd manzil 1st flr rm no 6 opp basar medical navpada bandra east 400051

+[protected]

My contact number: [protected]