Using unfamiliar mobile phone - it was in my pocket, and clearly not locked, somehow the AI Search function on my phone interacted with the Google Books app to buy an ebook I don't want. So when I spotted it I immediately asked for a refund giving the honest reason that it was accidentally bought. This has happened on other online providers all of whom simply check to see if the book has been downloaded or read (it has not), and then they reverse the transaction, but Google Books chose not to ... fair enough, no doubt by the letter of the law they're entitled to do that, but as a customer of other services who act in customers' interests (Amazon for example) this simply means I deleted the Google Books app on the device and plan to avoid using it in future - no surprise why most e-books are bought via Amazon not Google. Try to be a bit more customer-oriented.