We informed the rental company that we had purchased all the insurance, but they still insisted we buy more insurance. After repeated negotiations, they finally agreed that we didn't need to buy any. However, there was a major issue with the return address. We chose to return the car at the airport when we placed the order because we needed to catch a flight. Later, we received a message saying the return location had changed. We specifically consulted the counter staff during pickup, and they marked an address in the service manual. We followed this navigation and searched for a long time, but when we found the store, it was already closed. The return location was more than 3 kilometers from the airport, causing our group of seven to miss the flight and resulting in a series of financial losses!