Myntra.com — regarding undelivered item!

Address: Deb Villa, Flat 4A, 51/7 Dumdum Road kolkata, Kolkata, West Bengal, 700074

I have ordered a t-shirt on 12th of may2019. It was supposed to be delivered on 17th of may 2019 and i also received a message for the same. I was not at home for few days. However when i came back and i cross checked with my family members, they didn’t receive the same. I also called customer service center but they failed to give information regarding this as 12days has already been passed. They also could not tell the receiver’s name. Now i want the item or refund for the same.
Order no.[protected]-3356401
Placed on. 12.05.2019
Amount. Rs. 461
Payment mode: netbanking
Please do the needful asap.