Hi TechnoFerret,
Please follow the requested procedure for cancellation.
https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=1239If you would like to cancel the TrustConnect Trial license then please send your request to trustconnectcancel[at]comodo.com.
Please remember to include your: login, email, order number and a brief reason for cancellation.