my friend...my son has my old 3G iPhone activated on AT&T's network with NO DATA for the last year and a half...and the data was turned off at my request and my mom uses a Sony Ericson smartphone on AT&T with NO DATA at her request....
Is that iPhone 3G jailbroken and hacktivated, or did you use iTunes, start the data plan, then call to get it shut off? This is the first I've read online of anyone being able to do that.