You can't delete a customer, but you can deactivate him.
To deactivate a customer's account, follow the steps below:
- Click on the section titled "Customers"
- Search for the customer you want to deactivate in the search bar or go to the tab titled "Active" to locate the customer
- Click on the button titled "Deactivate [User]"
- Click "Confirm" to deactivate the customer's account from the popup window
*Note: When a customer's account is deactivated, their credit card will remain attached to their account.