****med me, no FREE domain (.co.za)

I recently purchased a web hosting package from Vox Telecom that includes free .co.za domain. To my surprise, my web hosting is active but domain isn't registered but linked to my package. When I tried to address the matter with Vox, their consultant called me saying that I did not buy a domain from them, adding that I only bought a web host package. I have been trying to resolve the issue with the, but they keep telling me that I need to pay extra R89,00 to register my domain but what happened to the domain that is linked to my account, which should be free. My domain is www.sfslogistics.co.za, but shows inactive, when I try to register with other service providers it shows that it is available