To file a complaint with Expedia, start by call their Customer Support number  +1|877||567||9375 or +1|877||398||1026 . Log into your account, go to "My Trips," and select the relevant booking. +1|877||567||9375 or +1|877||398||1026  Click on "Help" or "Contact Us" to submit your complaint. Clearly describe the issue, including booking details, dates, and any supporting documents. If you don’t receive a satisfactory response, escalate the matter by requesting a supervisor. +1|877||567||9375 or +1|877||398||1026  You can also reach out via Expedia’s social media channels, where companies often respond quickly to public concerns. +1|877||567||9375 or +1|877||398||1026  If the issue remains unresolved, consider submitting a formal complaint to Expedia’s corporate office or contacting consumer protection agencies like the Better Business Bureau (BBB). Always keep a record of your communication, including dates and names, to support your case. Stay calm and persistent for the best outcome.+1|877||567||9375 or +1|877||398||1026