Myntra.com — fake nike shoes cause pain in foot

Address: 131001

Purchased nike shoes from myntra (Order no[protected]-7093803). When i tried the shoes they were ok. But when i started wearing them regularly i started feeling pain in my right foot. Then i noticed the shape of right shoe was improper. But it has been 40 days when i purchased so i am not able to replace the shoes now. So i want them to replace shoes as soon as possible.