Flipkart — Exchange of my product.

Address:	797103
Website:	www.flipkart.com

Hello,
I have recently made a purchase on Flipkart. Unfortunately, due to incorrect size chart, the item was too big for use. Therefore, I have requested for an exchange of my item but Flipkart keeps on postponing the date for pickup. It's been almost a month now and even after calling the Flipkart executive several times they haven't taken any step towards addressing my complaint. Most recently they have even automatically cancelled my return request. I need sincere help on this issue. Please help me, I'll be waiting for your reply.
Thank you.