DTDC Courier & Cargo — Courier undelivered despite exorbitant pricing

I booked a shipment for door pickup on 9/7/2020 and it was pickup happened next day. The parcel was packed and shipped but never delivered. They have no customer care number for ambala, haryana where it was supposed to be delivered, i lodged complaints on chatbot, no reply came ever. I tried calling the hub, none of the numbers given online work. I am stuck in a bad situation as the item was being shipped back to a seller on amazon who cheated me with a fake product initially. Amazon insisted i send the item back and then i would get my refund, now that dtdc seemingly lost my parcel. I don't know what should be done. I paid an exorbitant 440rs for delivering something worth 499rs, since amazon had assured i will get the courier charges back. Now i have lost twice the value of product in money and no response from dtdc.