The Professional Couriers — Non delivery of parcel

Website:

www.tpcindia.com

Tracking Number PRO4512682
I have a parcel booked from Chengalpattu Hub to Jaipur(Rajasthan). The service used is their expensive Pro Premium which ensures faster delivery within 72 hours.
Sadly, the parcel is stuck at their Chennai office since past 3 days itself and the customer care is highly unresponsive. They don't pick up the calls. Never. Neither the Jaipur office nor their Corporate Office in Mumbai. The telephone line sometimes is busy so it's not that their phone service is dead but they deliberately don't pick up the calls.

Now what should the consumer do in such cases?
Please deliver the parcel to my address urgently.