The Professional Couriers — Courier not responding

I have an order to be delivered that was booked on oct 28th. There's no update after oct 29th. I've been trying to reach Delhi branch as well as Bhubaneswar branch. Delhi one told me to get in touch with Bhubaneswar or Kanpur one. But Bhubaneswar office is not even responding to the calls. The tracking id is KNP[protected]. There's no provision for complaint as well. Next option is to filea case against this courier service in consumer forum court