Re: Returning an Ebook

I noticed the other day that one of my books on Amazon for Kindle had been returned.

Umm, how does one "return" an ebook?  How does one go about asking to return it (considering there's no such thing as physically sending it back)?

Was it because they thought it was a different/new book and discovered they already had a copy?  (If that's the case, didn't the blurb ring a bell?)

Or can you actually return a book you don't like, even if it's in electronic format?

I's confused.