NoktaDomains.com is selling my own domain DoorstepLoans.com without permission!!

I was looking at Google for my website for Doorstep Loans and actually I was looking at whether the website,Doorstep Loans got any backlinks. Surprisingly, I find out that NoktaDomains marketplace has been selling my domain, DoorstepLoans.com on their site without my permission.

You may look at their domain sale page for the domain, DoorstepLoans.com at Noktadomains selling my domain. I have no idea what is going on. I have checked whois data and I still own the domain and the website, Doorstep Loans.