@jsheed_sa
If you still have not been able to register your custom name servers then please take a look at our domain reseller control panel, it provides you with the ability to register your own custom / vanity name servers and manage these from within the white label domain reseller control panel.
The control panel is located at www.zadomains.net - on the registration form select reseller, and complete all fields.
After registering for an account and validating the registration using the OTP sent to your mobile phone then Transfer your domain using our cloud name servers and once transferred, register your custom / vanity name servers by using this knowledge base article https://support.zadomains.net/kb/a1...to-the-za-domains-reseller-control-panel.aspx and ensure that you provide the glue records which will in turn register the name servers with ZACR.
After this has been done you can confirm the registration of the custom name servers by querying the ZACR whois servers
https://www.registry.net.za/whois/print.php?Domain=ns1.yoonix.co.za
https://www.registry.net.za/whois/print.php?Domain=ns2.yoonix.co.za
and then update the domain to use your own vanity name servers.
Our white label domain management control panel provides a bulk transfer tool for resellers, and for Registrars we have an automated Registrar migration tool that will import all of your domain names, name servers and registrant contact details (Your entire ZACR Registrar account)