[huang f]

I purchased a iphone 3G recently without signing the data plan. however, i don't really need the 3G services, since i have wifi at home and school. The Fido representitive told me that if i don't sign the data plan, i am risking to pay 1mb/$30 , and they have customers came back and compalain their for the phone bill that charge for $3000 dollar. anyways, i called to the fido customer servcies and asked for blocking the 3G and GPRS. BUT damn it now i can still access to the internet by GPRS. i call to the customer services again, and they said there's still chance that i will recieve data by the grps, cause they can't garantee the gprs is fully block....... and now i have to pay for it!! does anyone has this problem??? how can i fully block the gprs services?? thank you