I have booked on a well-known website a rental car for 2 weeks for 9 people. According to reservation I should get Mercedes-Benz GL. But there is no such 9-seater Mercedes-Benz GL. Should I call the rental company/broker (website) and clarify this? Or is the rental company (or broker) obligated to give me 9-seater as marked on my reservation (must not be Mercedes-Benz GL)?