This is an open forum, not Adobe support... You need Adobe support to cancel a subscription
-start here https://forums.adobe.com/thread/1703848
-or by telephone http://helpx.adobe.com/x-productkb/global/phone-support-orders.html
--and two links which may provide more details, if the above links don't help you
Thank you! Yes, I have followed all the instructions to get to a contact-form, but they all eventually lead to "write your question in a forum", feels like an endless labyrinth.. and I am usually good at this. :-D well.. I'll try your links now...