Sunrise Sports India — Nanoray 9900 tour Manufacturing Defect

I bought a Nanoray Tour 9900 and was playing with this racket for a month. Being a singles player loved the feel of this racket. However, today I noticed a small crack in the t-section which might be due a manufacturing defect and would like to consider for a replacement. I bought this from an authorised outlet, but they insist me to contact to the sunrise customer care for replacement.

Please find the invoice and photo to reveal the racket condition as attachment.

I am sure that this defect hasn't been occured by hitting against the wall/ or other racket, thus feel that this case is genuinely a product fault.

Please consider this case at your earliest convenience and let me know the next procedure from your side.