In cases of overbooking, airlines typically try to rebook you on the next available flight. If that solution doesn’t work for your schedule, you're entitled to a full refund instead. The phone agent will look at your original booking, check how your boarding status was affected, and calculate the refund. This may include not only the ticket price but also checked baggage fees and upgrades.
Passengers who are involuntarily bumped from flights due to overbooking may also be eligible for compensation under international aviation laws. The phone representative will confirm whether the overbooking was the result of airline policies and if you qualify for additional cash reimbursement. You may need to provide receipts or boarding information. Calling in ensures that all aspects of the refund are handled at once and without confusion.