Look at the following link for information on how to cancel your subscription.
You might be charged cancellation fees, for refund rules, refer to the following link.
Once you have successfully canceled your subscription, you can go ahead and delete your account. For details refer the following link
If the information does not help, then you need to contact support.
Login to your account and navigate to the URL below. Make sure that the browser has cookies enabled, and all script blockers are disabled.
Click on the chat icon on the bottom right, and type AGENT to avoid bots and talk to a human.
Also, be mindful of answering anyone who sends you a private message. See the following for more information about scammers