I changed credit cards last month and didn't update my AutoPay for my iPhone with ATT. So, I get a call from ATT asking me for a payment and we changed the info. Before I hung up I asked what the payment amount was and they said $300 something. I was like "What???". Apparently, in their system I had TWO iPhones with a bunch of other fees. After it was straightened out my bill was under $100. Just an FYI if you're not checking the amount you're paying for each month, because I usually don't with my automatic payment accounts.