To cancel the AOL email plan you can follow the simple instructions those are described over here. You can also revert your AOL mail back to the paid plan. To get more you can dial AOL Email Customer Service Number whenever you want. Well, try the given steps.
1. Visit at the official site of AOL and then sign in your AOL account.
2. Then you can go the subscription > Manage the plan.
3. Now you can click on the cancel button.
4. Finally, you have completed to steps of canceling the paid plan of your AOL mail.