base on experience... for regular postpaid, just go to www.globe.com.ph and click MY ACCOUNT. if you havent register yet, you need to sign up. For enterprise, use business.globe.com.ph instead. Once you are registered, you just add the phone number to view online billing. security code will be sms to the number you are adding.
for best/fast result I suggest you use the sms to 2312 technique... just put PLAN UNBILLED as your sms msg for unbill charges while PLAN BALANCE for outstanding balance. Use the cellphone number in question to send the SMS, i believe the sending to 2312 is free.