Has anyone else tried to set up online billing at att.com/MyWireless? I've entered in my phone number and gone through the account creation process numerous times after the confirmation number is texted to my iPhone. Each time I use the password they text me, I get the following error: "L151: Our records show that the wireless number you entered is not registered for My Account. If this is your first time accessing your account information online, you first need to complete registration. Error number: L151 " This is frustrating because I'm trying to register for "My Account", and the error message that tells me that I'm not registered seems redundant. Has this happened to anyone else? Any work-arounds for it? I've searched here and Google and haven't found anyone else writing about this. Thanks in advance.