The rental company didn't send me a confirmation email, which delayed me by over half an hour when picking up the car! The key point is I was rushing to catch a flight! Arrived to return the car close to 2 PM; my flight was at 3:15 PM. They delayed me for over half an hour, causing me to run with 40 kg of luggage to check-in. Didn't even have time for a tax refund, losing me some money.