How do I return a book I just bought, and didn't mean to buy?

I just purchased this book by accident. I was on my iPad then I wanted to sample it but it froze and I clicked the button too many times, and it bought the book. Is there a way I can return it somehow? It's only under Latest Purchases, I don't see it under Previous Purchases yet..so I'm not finding a Report A Problem Button (see image below)

Thank you so much!, Shana