is Maxis have any hidden charges? im using ivalue plan.. i dont remember which one.. but im already disabling the 3G and data roaming.. but my bill keep increasing from the first month till today even i already pay all the outstanding. the first month ok la.. around RM100 but now my bill is around Rm260++. why Maxis is charging me that amount but my credit limit is RM150?? anyone.. please give some advise..