Despite canceling my plan, I still get charged.

check your account to make sure you canceled, https://account.adobe.com

It's not my company, I'm a fellow subscriber. And you have hijacked a completly unrelated thread. I will detach this and move it to the corresponding forum.

First check your account, you may not have cancelled as you thought: https://account.adobe.com/plans

if you still have a plan, cancel that. 

If you have cancelled, you got a confirmation e-mail. Check that e-mail. 

If you have trouble canceling, 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, you need to accept cookies! If the chat window fails to open, or is non-responsive, use a different device and/or browser to start the interaction.

For support via Twitter:
https://twitter.com/AdobeCare

(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)

Important: Adobe does NOT contact you unsolicited by e-mail or direct message. If you get contacted by direct message from a person, claiming to be an Adobe employee, look at that profile and check if they bear the “Adobe Employee” marking under their name. Adobe support does not use Skype to give you support.
If in doubt, ask the forum.