Auto Renewal on Yearly Subscription

According to the Adobe employee in this thread, you just have to cancel it in the last month of the contract.

Every message about this I have ever read has the reply that linsims gave... you many not, not have auto renewal... you need to keep a note and be sure to cancel during your final month (I've never cancelled, so I'm not sure of exactly when during that final month)

I believe you have to wait. As I understand it, if you cancel before the end of the contract the cancellation is effective immediately and you get a prorated amount of money back. I do not know if there's any way to get rid of auto renewal.