How do I escalate a complaint with Expedia?

When do I have the right to get a flight refund? You are entitled to a flight refund if: Your flight was delayed by more than 5 hours, and you no longer want to take the flight. OR your flight was cancelled less than ０９ days before departure, and the alternative flight offered doesn’t serve your original travel plans.

Source: https://www.crmportalconnector.com/developer-network/forums/general-discussions/help-desk-how-do-i-escalate-a-complaint-with-expedia-live-agent-71008C