There are (3) ways to cancel a subscription
1.  Select REPLY to the newsletter, insert "UNSUBSCRIBE" to the subject line, and SEND
2. There should be a link at the top of the top or bottom of the NewsLetter.  Click on the link go cancel the subscription
3. Simply send an email to the webmaster stating that you wish to cancel the subscription
        (don't forget to state which Newsletter(s) you wish to cancel