Several closely related issues re control of junk mail, but not identical. Please kill a bogus AOLreminder for dental work
Kill any junk mail from reappearing after two or three messages. I receive daily AOL reminders about dental work proposed by a dentist whose services I no longer use.

The best way to resolve this is to mark the emails as “Not Spam”, that way you can train the spam filter to better identify important emails in the future. Also if you use a mobile device or email client to access your mail over IMAP, please check the Spam filters in that application, to make sure it’s not marking important emails as spam.
In order to disable the reminder, open your AOL Calendar, locate the event and click on it, then select Edit. Next Click on the drop-down arrow next to the reminder section, and select “No reminder” from the drop-down.