Myntra.com — pickup is not being made and no refund for the same

I raised the return request on myntra on 18-jan-2019. Expected date to be picked up was 23-jan-2019.
I did not get any update from myntra till 23-jan-2019.

I contacted and raised the complaint for the same and promised resolution time given to me was 72 hours (26-jan-2019).

Even after 27-jan-2019, there was no update and i tried to connect my call to escalation supervisor/senior.

He promised me the time of 24 hours and i waited till 28-jan.

Again on 28-jan i had talk and i have been told to wait 24 hours. Again on 29-jan i called and i have got the same update that wait for 24 hours.

This is what happening everyday and my query is not resolved yet and every time i'm getting the same line that wait for maximum 24 hours and now escalation supervisor is disconnecting my calls also.