I would like to cancel my annual subscription of my pdf pack. But how? Any official mail address?

Hi Karen Undritz,

Please refer this Kb article Cancel your membership or subscription | Adobe Acrobat, Document Cloud PDF services .

If you experience any issue then you can Contact Customer Care Make sure you login with your Adobe ID on the page and then select product from the list below.

Then select chat or phone under "Still need help? Contact us".

Regards,

Meenakshi