How will I be billed for using 1511EXPRESS service plan?

ZONE Telecom > Consumer > 1511EXPRESS
This is a prepaid service and as such there is no bill involved.  
 
However, you can view your account details and call details for the past two months by following these simple steps:
 
1.    Go to our website at http://www.zonetel.com.sg.
2.    Login at the "Members Login Here". 
3.    Click "Call Details" at the side
4.    Select the period you wish to review from the drop-down box.