Samsung SCH-i830 / IP-830w

Has anyone ever had any problems with this phone inadvertently accessing the internet? I spoke with a Verizon rep. that ask my company to write a letter taking responsibility for inadvertent charges with the pay as you go plan. He states that he's seen several cases where the user would receive bills in excess of 2K for inadvertently accessing the web. I think this is bogus and he is just pushing the $64.99 unlimited access charge. I've never heard of anyone having to write a letter before, you buy the phone, arrange for the plan and if you go over the minutes YOU PAY no letters!?

I don't need unlimited access all the time I only need access when I'm out of town or country, in-between the use of a real network.