So I am in South Korea for the majority of the summer, and I brought my iPhone 4 along with me. I had the 50MB international data plan and sent a couple texts/answered a couple local calls. I went a few MB over the 50MB limit, and instead of cutting my service or notifying me (I simply forgot to turn off roaming when I got close to 50MB) they continued to let my phone onto 3G. I'm now ladened with a $600 phone bill for the month. Does AT&T let this happen to get more money, or what? Anyway, is there anything I can do to avoid paying the full $600?