Hi jafig85! I'm so sorry we left you hanging here. Hopefully you've had a chance to take care of this already. Changing your phone number, whether because you've moved or because you've outgrown your existing number, is definitely something we want to take care of for you securely - so to complete a change like this, we'll need you to Contact Us if you haven't already. We'll be happy to get you squared away!
You will want to ether visit a store location or call customer care to hand this process. To do so dial 611 on your device.