Hello Ch3ckMate,
Currently there is no way of changing name within the account interface however it may be changed within database directly by the devs. If its not an urgent matter I would suggest waiting as such feature will be implemented in the future. When that future is available we will be able to change our user names at least once
If you believe your matter is urgent as far user name change than don't hesitate to send an email to SBS directly at [email protected].
Try providing as much information as possible so they will be able to assist you faster and efficient.