The only way to unlock it is if it is paid for in full and then only the company you got it from can unlock it. If the 'paid for in full' condition is met, then they 'have' to unlock it for you. However, if it isn't paid for, then they are not required to unlock it. No one else can help you get it unlocked and rooting it won't unlock it. It may not even allow for the rooting without it being unlocked.