1. Visit spintel.net.au
2. Login to My Account by selecting Customers and then My Account.
3. Under My Services, select the Mobile service to which you want 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 can use a Credit Card or PayPal.
6. Once payment has been approved, a confirmation will be displayed in My Account.