control plan charges


i wanted to see if there was an app i could use to control calls & texts.
i pay for my sons monthly plan but he sometimes goes over.
is there an app to automatically stop him from making calls & texts when he reaches his limit each month? i have an app that notifys him when he is reaching the limit but it doesn't stop him going over.
something i could setup on his mobile with a password so he couldn't change it.


.. very easy, combination of 3g watchdog and APNdroid or JuiceDefender, first app data counter, second and third for data disabling under 3g watchdog, still you'll need some lock app