You can raise a cancellation request from your Chargebee app.
To cancel your Chargebee account go to user profile (bottom left corner) -> Manage Account -> Select the subscription -> Click Cancel.
Only the owner of the account will have access to raise a cancellation. If you have a dedicated CSM/Account Manager, we highly recommend reaching out to them.
To Reactivate/Resume using our Chargebee account you can contact Chargebee support.