I bought my iPhone a week ago and I signed the contract. Today I decided to end it and switch to GoPhone Pick Your Plan. At the AT&T store they gave me a new SIM card to start from scratch, but when I try to fail the credit check on iTunes entering 999-99-9999 as the Social Security Number it doesn't actually fail! I get approved and it makes me sign a contract again. What am I doing wrong? I entered my same info as I entered when I signed the contract a week ago (same full name, address etc) but I only changed the SS number. Do I need to change something else?