Delhivery — Haven't received my parcel

Address:

North Lakhimpur, Assam

I had sent a parcel to my friend who lives in Assam through Delhivery from kota. It was basically a birthday present and he was supposed to receive it 2-3 days after his birthday but instead it got delayed for 15 days and he still hasn't received his parcel yet. He visited the delivery office today to receive the parcel himself as he'll be leaving for college tomorrow but then the office was closed. I tried contacting the person from Delhivery Kota but he isn't even receiving my calls for the past few days. This is really disappointing and frustrating at the same time:(