What is Singapore Cancellation Policy?[Singapore]

Singapore ‘ 24-hour cancellation policy allows passengers to cancel +1-[844]-[873]-[0997] their booking within 24 hours of purchase for a full refund, to contact live agent dial +1-[844]-[873]-[0997] (OTA) and provided the ticket was bought at least seven days before the flight’s departure. This applies to all ticket types.
Can I cancel a Basic Economy ticket with Singapore Airways?