You will need to make a new e-mail account. Sign up and create a new EA-Master account and activate your key to that account. If i were you i would change my name to something else to prevent people from crying all the time. But if you do want the same name, login your banned account, delete the soldier. Log in your new account and create the name there. Remember your GUID is a combination of your E-mail + CDKEY. No 2 are alike.