I was sent an email stating that my Adobe Creative Cloud subscription has been canceled

Lots of things could be considered fraudulent activity. For example, using a stolen credit card, identity theft, sharing individual log-in & password with non-subscribers, or other violations of Adobe’s Terms of Service. 

https://www.adobe.com/legal/terms.html

Is there anything else we can help you with? We are product users, not Adobe employees.

This is a public forum, not Adobe support... other users can't see your account to help
This is the correct way to contact support to ask about the exact reason
https://helpx.adobe.com/contact.html?rghtup=autoOpen
- and enter AGENT in the box asking How can we help you?

eg, sharing with someone else