How do I change from Auto Top-up to Manual Top-up for 1511EXPRESS service plan?

ZONE Telecom > Consumer > 1511EXPRESS
To change from auto top-up to manual top-up, you can apply the following steps:
 
•    Log-in to your account at http://www.zonetel.com.sg.
•    Click Top-up Information.
•    Under Top-Up Option, select Manual Top-Up via SMS
•    Key in SMS Alert Mobile Number
•    Click Submit button to register changes.
 
Alternatively, you may call our Customer Care Hotline: 6259 9453 for assistance.