This time I rented a car at Sydney Airport. They didn't have the sedan Corolla I reserved and gave me an old Nissan with noisy door handles. I refused and asked for a different car. Hertz declined, saying that the car had been assigned for my trip to Melbourne, so there's no extra fee for a one-way rental. If I changed cars, it would cost an additional 400 AUD. I contacted the rental car service, but to no avail. They only confirmed that the fee I paid already included the one-way rental cost, so I kept demanding a free car change. Finally, they downgraded me to a hatchback Corolla without informing me it was a downgrade. I later checked online and realized this meant I effectively paid extra for the one-way fee that should have been included. [Rental car service, please provide an explanation] Secondly, I explicitly requested prepaid fuel in Sydney and the amount charged included it. However, the careless Hertz staff at Sydney Airport didn't reflect this on the confirmation, because I was focused on changing cars. When I returned the car, I noticed the receipt indicated I declined prepaid fuel. I had to argue extensively before Hertz Melbourne acknowledged the error was on Sydney's part. [If renting a car through this service requires such argumentation skills and online support is ineffective, please clarify this in the rental requirements, particularly regarding customers’ English proficiency] All in all, don't place too much hope on the rental car service’s effectiveness when issues arise.