AT&T WON'T LET ME CLOSE MY ACCOUNT AND HAS CHARGED ME $700 OVER 10 MONTHS AND IS STILL CHARGING ME MONTHLY!!!!!!

I have had THE WORST EXPERIENCE EVER with AT&T. They will not let me close my account because I don't have my "pin number" anymore. I was told by the AT&T customer service representative to file a fraud claim and put a block on my bank account. I have done that and was just charged AGAIN for a different amount through my bank (probably a workaround so that AT&T can still take money from me!). I am being ROBBED!!! This is for a phone that has not been used for 10 months – it was for an exchange student who had moved back to Europe in July. It is unbelievable what scumbags run AT&T. How do you sleep at night stealing from hard-working people!?!?