Got to Dallas Texas from Oregon. Booked a luxury c...

Got to Dallas Texas from Oregon. Booked a luxury car on there website. Website says to bring the debit/ credit card that you made the reservation with you. Got to dollar rent a car and was told I need a return flight booked atleast 24 hours prior to picking up the rental or a major credit card. Mind you there website says none of this on booking my reservation. So they downgraded me after paying to a full size suv. Then I spoke to there manager then the number on the pamphlet and the manager on the pamphlet told me there system doesn't tell you any of this when renting a luxury car or higher and he was sorry but im still stuck in a suv and he would let his corporate know about the issue. Very unhappy and very unprofessional. I will not rent from a company that will not stand behind there word. You buy something and then when u fly in it's changed. Not right!!