Pantaloons Fashion & Retail — didn't allow to exchange shoe

Address:

Pune, Maharashtra, 411007

I had taken a pair of shoe from pantaloons baner pune, 2 weeks before. After 1 week i wanted to exchange it but the manager did not allow me to exchange the shoe. As per the policy we can exchange within 30 days right but the manager was not ready to listen he gave a lame reason that i wore the shoe and the shoe was stretched where as it was like that only when i had buyer it, there are so many people who try shoe in the store and every shoe there has stretched, i told him to compare the shoe with other shoe in store as there was no difference in them yet he did not listen, how can pantaloons do this don't we as a customer has a right to exchange?