As stated in their Terms of Service: use the feedback form for account termination. If you are a paying member, you generally won’t receive any refunds.
URLS:
http://www.gocomics.com
http://www.gocomics.com/help/contact
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.