Here's my chat with Amazon.com to try and get to the bottom of it (slightly edited for clarity):
You are now connected to Rashmi from Amazon.com.
Title:My EBook Is Being Sold Without My Permission By Somebody
Rashmi:Hello, my name is Rashmi. I'll be happy to help you today.
Rashmi:A member of our Kindle team will need to help you with this. One of our Kindle Specialists will assist you shortly. A Customer Service Associate will be with you in a moment.
You are now connected to Fatima from Amazon.com.
Fatima:Hello my name is Fatima. How can I help you?
Me:It appears that an ebook I published through Smashwords.com for free is now being sold through three foreign affiliates of Amazon.com without my knowledge or permission. Smashwords has no relationship with Amazon and therefore I can only reason that somebody has stolen my work and is selling it through these foreign affiliates. However, I hope I may be wrong in my conclusion.
The original work is here: http://www.smashwords.com/books/view/178667
The affiliate links are here: http://www.amazon.es/The-Adventures-Belinda-McFate-ebook/dp/B008LV2JTK/
Fatima: Wow I am really sorry to hear that Craig. Thank you for the links let me take a look at it.
Craig, a member of your Author Central Department will need to assist you with this. I can submit a form to that department with your issue and they will research the matter for you.
Me:Thank you. What information will you need from me?
Fatima:I need the ASIN/ISBN of the book please.
Me:On Smashwords, the work has no ISBN as I do not put ISBN's or ASIN's on works I release for free. On the Amazon affiliate, the ASIN is B008LV2JTK but I did not assign any number to the original work.
Fatima:Thank you for those details. I am adding it on my side.
Me:If I may add one more comment. Any monies paid to me for any work I release through Smashwords (even though the work in question is free) would be paid to me THROUGH the Smashwords organization. If monies are assigned to go anywhere else it cannot have any affiliation with me.
Just thinking to myself, IF this is a case of theft, the monies for this work would most likely go to a foreign address that would be difficult to trace ownership. My home address where I receive monies for my other works is located in Gettysburg, Pennsylvania in the United States.
Fatima:Craig is there any particular message you would like me to add in the form with your details?
Me:No, I believe I have communicated all I wanted to say. I do hope that IF this is a case of theft, the situation is remedied quickly.
Fatima:Okay I will submit the form and send it off I will also send you a confirmation email.
Me:Thank you. I very much appreciate your help.
Fatima:You're welcome, Is there anything else I can help you with?
Me:That is all for today. I look forward to a response from the Author Central Department.
Fatima:You will receive a response via email. Have a good weekend. Thank you for contacting Amazon. We hope to see you soon! Take care!