1. Visit spintel.net.au
2. Login to My Account by clicking Customers and then My Account on the top right.
3. Select the Mobile service from the left menu to add the Data Block.
4. Select the Data Block size you wish to add and click on Next.
5. Select how you wish to pay for the Data Block. You may either use a Credit Card or PayPal.
6. Once payment has been approved, a confirmation will be displayed in My Account.