I contacted Expedia about returning a rental car early. I didn't think it was possible, but when I called, the agent said I could and would be refunded for the days not used. I was still skeptical so I called again. Same response and this was after the agent called the rental car company. They both assured me of a refund if I called them after I returned the car. I returned the car and I contacted Expedia and the response has been "We know that the resolution provided is different from what you have expected." No refund, no explanation, no apology, nothing.
