Infringement of copyright

Please cancel the one star - they deserve nothing. My books, of which I have sole copyright, I am an author. My books are sold on Desertcart without my permission. This company is infringing on copyright. I consider this to be serious: theft of my property. It is not only desertcart.co.za, but in the UK, Kuwait, Oman and many other countries with the Deseretcart-websites.