Hi:
We do not collect credit card information for the free trial of our Learning Subscription or for the SAS Academy for Data Science classes. At the end of the free trial, your access expires and you will no longer have access. You might receive an email reminding you that your access is going to expire. I think that happens approximately 10 days before the expiration date. But again, no financial obligation is involved. If you do decide to make a purchase it would be an entirely new transaction, with a Shopping Cart transaction and a confirmation number and an activation code after payment is made.
If you want to cancel your free trial now, you'd need to send mail to elearn@sas.com to request that. Or you could just let the free trial expire at the end of 30 days, which is what most students do.
Cynthia