If you need to escalate a complaint with Expedia, start by calling their customer support at ＋１ー ８３３ー ３４１ー ８５３６ . Have your booking details ready, including your itinerary number and a clear description of the issue. If the initial representative can’t resolve your concern, politely ask to speak with a supervisor. You can also follow up through the Expedia Help Center online or send a formal complaint to travel@customercare.expedia.com. For quicker responses, reach out via social media. If unresolved, consider contacting your bank for a chargeback or filing a complaint with the Better Business Bureau or consumer protection agencies