Reebok India — defective reebok shoe leading to shoe bite

Address:

H 47/6 Shankar Vihar Delhi Cantt New Delhi, 110010

I purchased a reebok running shoe on 30 oct 2019 from incs naval shop at shankar vihar, delhi cantt.
The shoe has a very hard protrusion in the back side resulting in a shoe bite on the very first wear. I have been advised by the agency/shop to approach the company directly for a replacement.
I am surprised at the poor quality control from such a reputed brand and wish to have my shoe replaced by a proper quality shoe.
Request you to kindly replace my shoe at the earliest.