Be careful when buying a yearly subscription!

I bought a yearly Captivate subscription for myself when going through school but don't need it now that my employer provides a subscription. I attempted to cancel as soon as I was hired but didn't go through with the cancellation once Adobe notified me that I would be charged half of the yearly price for cancelling early. So, I set a reminder on my calendar to cancel at the end of the subscription. However, when I logged on to my account at the end of the subscription, the "cancel plan" option was conveniently not available online. When I called customer support (after searching forever to find the actual number), the Adobe support technician assured me that it "looked like my subscription was cancelled, and I would be receiving an email." However, my subscription wasn't cancelled, and my credit card was charged again. I am so fed up. I ended up paying the stupid cancellation fee just to get out of this horrible contract. Horrible customer service.