Yes, bro. You're not alone.
I got a shocking SMS on Sunday morning, after my 25km Newton run, i was so tired and saw this SMS really psst me off!

For my case - i signed ivalue plan from VP50 on the dot on 25 September 2010, 00:15.

before tht unbilled RM50 now its shoot up RM255 with usage of 58MB.
Bro, what i have done is i insisted that i will not pay the minimum amount, its maxis problem. i signed ivalue and i shd get ivalue in return.

1st maxis CS was useless, then i called again (btw its advisable to select "iphone4 option) and the maxis CS realised my problems as there's also other complaining the same thing.

so he lift my barring instructions.
same here. was told maxis cs are working on it.

btw, i was told my plan was not converted to ivalue plan, that's why the overcharging problems happen.
let's wait how maxis going to solve it within 2 days.

i was told to call back maxis on Tuesday to checks again.