Myntra.com — Unable to use gift card

I purchased the gift card on 11th November, 2021 and did not receive any coupon code. I raised the complain on same day and was told that within 72 hours it will receive an update. Later I was given 15th as an extension. Today it is 18th and I still don’t have any update.
I am calling every single day and no one is helping me out. Few customer care executives even hung up on me.

As a customer I have never felt so humiliated and insulted before.

Kindly give me my money back. This is becoming intolerable now.