The auto-refill feature is the best way to keep your pay-as-you-go account balance positive and avoid interruption of service.
If you use this feature, we will automatically charge your credit card on file when your PSTN (Prepaid) account balance falls to a certain level. We will charge your credit card whatever amount is necessary to return your balance to a level you choose. In order to use Auto-Refill, you will need a valid credit card on file in your account.