Myntra.com — product return failure and bad customer service

I submitted a request for return of a purchased product and no one is here yet. I was given time for 26/06/2019 in the morning and yet after 5 days no one is here to pick up the package. Customer care number is not valid also. Can some one please tell me how this work or is myntra customer care really sucks? I am reconsidering buying anything again.