To resolve a dispute with Expedia, begin by contacting their customer support via phone (1-808-900-8011) or online (through their website or app). Explain your issue, providing your booking details and any supporting documentation. If the initial issue isn't resolved, you can escalate by requesting a supervisor or manager, filing a formal complaint, or disputing the charge with your bank. 
Here's a more detailed breakdown:

    1. Contact Expedia Customer Support:
        Call their customer service line at 1-808-900-8011. 

Visit their website or app and use their chat or online form. 
Be prepared to provide your booking reference number and any relevant details. 

2. Explain Your Issue:

    Clearly and concisely explain the reason for your dispute. 

Provide any supporting documentation, such as receipts, emails, or other evidence related to the issue. 

3. Escalate if Necessary:

    If the initial issue isn't resolved, request to speak with a supervisor or manager. 

Consider filing a formal complaint with Expedia. 
If the issue remains unresolved, you may need to dispute the charge with your bank. 

4. Disputing with Your Bank:

    Before disputing with your bank, ensure you have exhausted all other options to resolve the issue with Expedia. 

Have all relevant documentation ready when you dispute the charge.