Myntra.com — My ordered item was delivered but I didn't get it

Address:	686666
Website:	myntra.com

I haven't get my ordered item.
but I got one message that item was delivered
my order number is[protected]
I was order one t shirt the name of the company is Tokyo laundry and a casual shirt of the company is roadster at 6/02/2016.
and I got message from myntra is your all item is delivered on 21/02/2016.
but on 11/02/2016 I got a new message from myntra is your item was delivered.
but still I don't get any of my ordered item.
The total money that I paid that order is 1805 rupee.
what I will do?