Payments you keep taking

Paying a supposedly cancelled subscription from 2018 to now and nobody cares about it? Sorry, but you seriously can't think that any company would refund 4 years of subscription services? I think, and again sorry for that, that the best you can expect is a clean cut without additional pain. Anyhow, for anything to happen, you need to contact Adobe customer care. Adobe customer care can be contacted by beginning a secure chat session at https://helpx.adobe.com/contact.html?rghtup=autoOpen. Pop-up blockers need to be disabled! If the chat window fails to open, or is non-responsive, use a different device to start the interaction.
Support phone numbers may be found here: https://helpx.adobe.com/contact/phone.html. Please note that phone charges may apply.

(see also here: https://community.adobe.com/t5/creative-cloud-services/how-to-contact-adobe-support/td-p/11875703 or here
https://community.adobe.com/t5/account-payment-plan/how-to-contact-adobe-support/td-p/11843852)

This is a user to user forum, with some Adobe participation. But even if an Adobe employee jumps in here, he or she will ask you to contact customer care.