Yes, you can. this article runs through how to upgrade your annual plan/package.
Broadband Go offers three different annual plans; “Connected” “Casual” and “Super-User”.
If you decide at the beginning or part way through your term that the current plan is not suitable for your needs and requires an upgrade then this has to be done by contacting support.
We will pro-rate the charge and send you an invoice for the balance to upgrade, this can be paid securely by debit or credit card online.
To upgrade, contact support through the website, app, or email directly to firstname.lastname@example.org