You cannot delete your account.
Contact them to request full account removal: http://www.reviewcentre.com/contact-us/Member-Enquiries_1342713.html
Please include the email address used for signing up with in the message.
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.