This report, located in Reporting > Financial reports > Pre-authorised payments, allows you to view the status of all pre-authorisations set up by your contacts.
From the action button, you can export to Excel or send an SMS/email to the account owner.
Note: This report keeps track of all changes related to a customer's pre-authorisation. It's possible for customers to show up in the report multiple times - for example; if they decide to cancel their pre-authorisation and then set up a new one.