I think a lot of people here are getting edgy and panic because of this "unbilled amount" thing but how maxis works is,

Unbilled amount = payment if u did not have the free talktime & data (data is the one that kills cos 1mb is RM5 if u didnt have data plan)

How they actually bill u end of the month is that the data and talktime will be discounted off using a 'rebate' system.

How maxis counter this issue is give a lot more credit limit at account. Last time my account CL is almost RM3k when my actual monthly commitment is only RM30. So that way, your unbilled amount wont hit the ceiling.

Hope this clarifies for people

It will be RM100

Basically unbilled amount is the amount u have used so far without the rebates yet

Unbilled Amount - Free Talktime - Free Data = Actual Amount