Firstcry.com — pampers pant style diaper l size

I have been using pampers since my baby was born. But the recent diaper pack is giving her really bad diaper allergy. I had to visit the pediatrician so many times and my baby underwent so much of pain.

I had ordered for 2 packs with 74 pieces each. One pack i used. I want replacement for another pack which is unused. But they want me to talk to pampers customer care. How can pampers help with refund of replacement when i had bought the product from firstcry?... Ridiculous!!!