are you on monthly postpaid plan? if so, you can add 50GB by adding data plan on your service with same account number i think that will give you another 70$ a month but with huge data allowance
but if youre on prepaid, check their website if there are promos for rechrage
Hey Sheng, sorry if you feel that way. You will not be charged for something you have not used. So that customers can manage their usage better we do provide tools like the My Optus app or My Account online. Also look out for the SMS alerts that we send. If you think your usage has changed then we can definitely look at your plan options just chat to us → here.