ok, I went through the homepage and conclusion I have is singtel charges $10.70 per GB of excess data.
my plan gives me 3gb of data + 1 gb of data (CIS) = 4 gb.
but when i opened my bill last night, i saw my data clocked about 4.5gb but there was an additional $30 for the excess 0.5gb data !?
when you hit 90% of you data, ST will send a warning SMS ... i did not get that.
i will usually check on the last day of my billing cycle (Singtel app) and i am sure i only clocked about 3.4gb at the end of the day.
anyone got wrong billing by singtel before ?