when I get my bill, the roll over amount for the previous month seems wrong (month the bill if for)
then it repeats it later in the bill, saying the same amount has rolled over to the current (unbilled) month.
for example, a bills say I have 62300mn total available. and the amount I actually used is 60581mb. and I rolled over 23550mb? but I should have had 45393mb rollover added to my total available, making it 106840mb. other times its just an asterisk (*) ?