You can purchase an additional discount bundle to surf more cheaply: MEGASURF. You pay for this additional discount bundle using your calling credit. The amount will be directly deducted from your calling credit. This means that you can only purchase the bundle when you have sufficient calling credit. You will receive a text message alert when your discount bundle is almost or completely used up. If your bundle has been completely used, you can continue to surf at the normal standard rates. The additional mobile data in this discount bundle is valid in Belgium and throughout the EU.