Why should it be up to the carrier to notify a user when they exceed their usage? When was the last time your electicty, water or gas company personally notified you that your usage was running above the average? All the carriers offer plenty of options for the consumer to choose how much usage they need or want to pay for. They also have multiple options available for consumers to monitor their usage throughout the billing period. If the consumer doesn't keep tabs on their usage why should that be the carrier's fault? In my 13 years experience as a wireless sales consultant, I would say most people that have problems with this issue tend not to look at their bills, monitor their usage, select a realistic plan for how they use their phones or were missled by poor customer service at the point of sale.