I have been trying from a long time now to register for Apple Developer Account for my company but every time I am getting the Same Unknown Error. And I have tried contacting the support team from a long time but haven't received any resolution.
I am getting Unknow error while registering for apple developer account
Thanks for the post? Have you contacted that team? As they do not monitor the forums.
I would recommend you to contact the developer account support at https://developer.apple.com/contact to make sure they are aware of the issue.
Albert Pascual Worldwide Developer Relations.