Myntra.com - Did not get exchanged product

I ordered several items from myntra on *nd july out of which i raised a request for exchange of one lee jeans having order id *******-*******-*******. Pickup was scheduled on *th july but at that time i was out of the city so i rescheduled the pickup on **th july but till now ** days passed but no one came to pickup the item not i got the exchanged product. I appx talked several times with customer support of myntra but each and every time, i got a response that we raised your complaint and just wait for **hrs. Its rediculous behaviour of myntra as i am the valuable customer of myntra since last *-*years but now i will not order anything from myntra and will suggest the same to everyone. No help from customer support. Registered complaint number is ******-******. I also requested to arrange a call with the supervisor of myntra but no one called me till now. How myntra become this much unprofessional, its strange to see. I want my exchanged product asap.

My contact number- **********
Email id- piyush.malhotra****@gmail.com