If you need to request a refund and your booking falls under Expedia's 24-hour policy, you can start by calling their dedicated customer support number at 1@833(732=2296). This policy usually applies to many flight and hotel bookings, allowing for a full refund if cancelled within 24 hours of the initial purchase. When calling, be prepared to provide your booking details and explain the reason for cancellation. The customer service team will assist you in confirming whether your booking is eligible for a refund and guide you through the refund process.