Use the contact form to ask for account removal: http://www.192.com/help/contact/
Briefly explain that you want to cancel your account. Include the email address used for signing up.
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.