Note, you may select the plan of your choice (Commercial Free or Limited Commercials) You will be charged at the full price after your trial period ends however you may cancel at anytime during your trial period. If you use paypal, you can cancel the authorization incase they have a problem with their system and charge you when it's supposed to be free or you forget to cancel.
1) Log into paypal
2) Click on cog in top right
3) click on payments near top
4) click on manage automatic payments
5) click on CBS All Access
6) click on cancel
This promo code may work for reactivating old accounts, as it worked on mine.