You can get your account cancelled if you are very firm and insistent that they cancel your account. They are sneaky, especially with their really strong indian accents, but you can do it.
I hit a rough patch in my life last year, used AOL for 75 or so days and never paid them a dime because of their 90 day free trial.
It's a pain, but you can do it. Also, their tech support was pretty decent.
That said, their software sucks and ir really hard to complelely remove.
Isn't there any software out there that deals exclusively with removing AOL from a computer?