To speak with a human at Expedia, you can: Call customer service: Call (1*833*341*8536) OR (1*833*341*8536) (US) (OTA). Mosaic 3 & 4 members can call the dedicated Mosaic customer support line at +1-888 Expedia. Start a live chat: Start a live chat on the Expedia website. 5 How do I complain ...