Hello,
First of all, please keep in mind that the golden pack balance can be used ONLY to purchase / extend a golden pack (like the ultimate pack in example) and cannot be used for a golden membership nor for anything else.
But, and only for one time, we can extend your golden membership with money from your golden pack balance.
Please confirm, if you want us to do so.
Note: For the future, please keep in mind that a golden membership can be purchased / extended ONLY by clicking your username, clicking the "upgrade" / "extend" button, and using one of the available payment methods.
Best regards,
Dave E.
NeoBux Support