Amazon selling from my listing?

I have a book for sale on Amazon which I have published NOT on Amazon. Amazon do not have any copies of this book.

On the listing for my book it offers it “fulfilled by Amazon” and available for Prime, but says Temporarily Out Of Stock.

I am not getting any of the orders placed this way!

You can only order from me by clicking through “other ways to buy”.

What can I do to get Amazon’s version removed?