Email-based/Federated
Please refer to the following article to assist with deleting either Email-based/Federated users: Deleting and/or Disabling an Email or Federated User
 
AD
Contact support@metacompliance.com and we will arrange to remove your AD users via a 'Change Request'. 
 
SCIM
When SCIM users are disabled on AAD, we receive a Deletion Request 30 days after we receive the Disable Request. 
When the account is subsequently deleted, this will also delete the User Account along with any associated audits.