DTDC Courier & Cargo — No delivery even after 14 days

Hi there

I sent a parcel from Patna to Kolkata on 232/11/20 using DTDC courier services with the AWB no d61776076. I was charged rs 750 for the parcel and i was assured that the delivery will be made in maximum 4 days. Since the parcel contained food items i paid them the amount the asked under the impression that the parcel will reach kolkata on time.
It has been over 12 days and the consignee has yet no received the parcel. The online tracking is showing that the parcel is lying in chennai. Whenever im trying to contact the customer care they just tell me it is on way and they dont let me speak to any senior. They blatantly lie and hang up the call on the face of whoch i have a call recording as well. My 80 year mother spent 8 hrs preparing the food which costed us almost 6000 rupees. This is totally unacceptable. There should be regulatory authority for private courier services in india.
I realize now how helpless a customer is since there is no governing authority and these courier companies conduct operations at their own whims and fancy. I tried mailing the dtdc customer care as well but alas i received no reply. Their business model is to just dupe customers since they charge pre-hand, after that whether the parcel is delivered on time or not there is no guarantee whatsoever