Be careful with Amazon Kindle refunds

"Returning Kindle Content Any content you purchase for Kindle from the Amazon Kindle store is eligible for return and refund if we receive your request within 7 days of the date of purchase. Once a refund is issued, the item will be removed from Your Media Library and will no longer be readable on your Kindle. To request a refund and return, click the Customer Service button in the Contact Us box in the right-hand column of this page to reach us via phone or e-mail. Please make sure to include the title of the item you wish to return in your request."

Amazon Policy

I had some problems with the 1-click payment, bought some items by mistake and then I received an email saying that I'm not able to ask for refunds.

Can they do that? I'm starting to hate Amazon.