Zurnner Clothing — Received wrong order

Website:

zurnner.shop

Hi,
I placed an order at zurnner clothing website on 27th april. Today I received a completely wrong order. I ordered a reddish orange salwar suit set instead i received a purple color saree.
Kindly help me as to what measure will be taken. I tried complaining at an email id given by them official.[protected]@gmail.com
I am enclosing a picture here for reference.
I paid an amount of 876/- as cash on delivery.
If its a fraud then why its been promoted on instagram?!