[Lsme420]

Easiest way to permanently disable your web is to go into your settings and then connections and delete both connections, the "Sprint Data" and the "Phone as a Modem Connection", that way your phone will not be able to connect to anything but WiFi. Also I can tell you that for once the Sprint Rep you spoke to was right. You can not be charged for using your PPC over your home WiFi network.
Also I would recommend you call sprint and tell them to completely shut off your pcs data connection.
Unlimited Data is only $15 a month...............