Myntra.com — product not delivered - where it says delivered

Address: Chennai, Tamil Nadu, 600096

Website: www.myntra.com

I have placed an order on: 23 jun 2019
Order no:[protected]-0581001
For total:3, 019.00 on myntra website for 5 products. Out of 5 products i have received 4 products.
However i have not received libas women green printed straight kurta for rs 713/-, it says it delivered on 2nd july 2019, where in its not delivered.
I have called myntra contact center, n informed them about this they straight away refused to help saying that they cant help me. As the time limit is 5 days, (There is no policy which says that i have to inform within 5 days). I told them that, i was out of city so i could not inform them. I have requested them to help me. I spoke to escalation supervisor mr. Manish he gave me delivery person number to me mr. Murugan. I have called mr murugan who delivered my orders, he informed me that he delivered me total 3 packages, (1 package containing 2 products of (Sassafras)

I need my money back or myntra need to deliver my product for which i paid.

Please help me in this issue
Its a humble request.