If you've already tried the standard communication＋１－８８８－(６９０)－６１１８ methods with Expedia and your problem hasn't been resolved, here's how you can escalate the issue: 1. Request to Speak with a Supervisor or Manager During a phone call: If you're on the phone with a customer＋１－８８８－(６９０)－６１１８ service agent and are unsatisfied with their response, politely but firmly ask to speak with a supervisor or a manager.