If your account is still in the old billing system, ask them
to remove/expire IP BASIC SERVICE.  That's the code that
enables internet access.  Without it, your phone would just
error out if you wanted to get on the internet.

I had several emails with them today, but have had talks with customer
support and emails. I think the one I got today, Bruce K.said he  will take
care of it, he seemed like he knew what he was doing and gave me a credit
for the internet usuage which the toerhs would not and said he was
disabeling the internet. Hopefully this time they do it.  Not that I really
care about Sprint but it is the only service I got that gives me reception
everywhere I go so far in the areas I work. I do thank you and the others
and hopefully this is the end of that problem. I hated the thought of giving
up that $600 but I would have spent that much and more for what they are
charging me. I didn't get credit for all of it but enough I could live with.
What apain. Anyway thanks again.

My Sanyo SCP 7000 phone has a menu option to disable PTT and Web.  Have you
checked your phone's menu to see if it has a similar menu choice?