Hello Carenl,
We apologize for the inconvenience caused. As per the description above, you want to cancel the current Adobe PDFPack, Annual subscription, Is that correct?
You may refer to the following KB doc to get the steps for canceling the subscription Learn about cancelling your Adobe Creative Cloud plan subscription and Return, cancel, or exchange an Adobe order
Sign in with your Adobe ID and password on Adobe.com>Manage Account>Plans and Products. Use a different browser this time like Chrome or Firefox or Safari.
I have shared the contact details of Adobe support via Private message, please check your email inbox. You can also contact the support team through https://helpx.adobe.com/in/contact.html
Hope this helps, and keep us posted with the results.
Regards,
Anand Sri.