Some maintain that sending an email to CL's tech support will eventually do the trick. Others propose various workarounds such as changing your profile to include a fictitious email address or simply being inactive for four months which deactivates (whatever that means) an account.
Constantly changing EULA. As for your comment about the end user license agreement (EULA) that's constantly changing, we assume you know that's par for the course on the Internet where most EULAs reserve the right for the website to change terms arbitrarily. Look for a statement such as "Company reserves the right to modify and/or change any of the terms and conditions of this EULA at any time and without prior notice." The simplest solution to avoid having these newer user terms enforced against you is to stop using the site for all purposes.