How can I e-mail to America Online?
If you are trying to cancel the service, you cant. You have to telephone, often several numbers. The easier way is to just have your credit card service refuse payment.
If it is another matter, telephone is the only practical way. AOL does not answer emails in my experience.
Good luck.
Search on google AOL canceling
However, I have to tell you, AOL has a nasty habit of changing the telephone lines often.