Click on the My Rewards tab, once you see the catalog you will know if you have enough points to redeem. You can redeem multiple orders of 20 points for $20. The unsed amount will remain on your account until finished.
you need to first collect 20 points , then you can redeem it for $20 bill credit to lower your bill
you can check your current points at My rewards site. First login My Account, click Rewards tab and there is a link to My Rewards site. In Rewards site, you can check your points and redeem there for bill credit or you can use points to buy add-ons
