Nykaa.com — I have not received my refund it's been 20 days

I cancelled my order because of the wrong address I have provided, the item reached at nykka warehouse within 4days. However I have not received my refund yet.
The customer service is worst of its kind don't know how to communicate at all. They are saying constantly it's stuck in our end please wait for 2, 3 days. I did. But no i didn't recieve my refund.

You can't grow nykka with this kind of service.