Madrasshoppe — hindi grammar text

Last week i ordered a hindi grammar text for my daughter staying in a hostel in kerala on cod. I have ordered for single text, but the person who delivered the book gave her two, unknowingly she collected both and it cost her double, i am attaching the order confirmation along this complaint.. It's clearly indicating i have ordered for a single book. Pls arrange to take the unwanted book back and return the money at the earliest.