Please carefully review Magento U Terms & Conditions at magento.com/legal/terms/magento-u. Magento U Terms & Conditions state the following regarding customer initiated cancellation:
In order to receive a full refund, cancellations and rescheduling notifications must be made in writing to firstname.lastname@example.org at least 10 (ten) working days prior to the start of the course date. When requesting a rescheduled registration, the customer shall endeavor to reschedule the course for a mutually acceptable date no later than twelve (12) weeks from the original requested start date of the course(s) based on course availability.
If a cancellation or rescheduling request is received less than 10 (ten) working days before the event, or in the case of absence without any notice, the stipulated training fee will be fully charged without further notification. The customer has the right to send another participant as a substitute, provided that any applicable prerequisites have been completed. This change in booking is free of charge. There are no refunds for partial use of services or partial attendance.