When my partner and I tried to pay for our rental, the man at the booth declined my VISA card because it said VISA Debit (I used this card to book the reservation). He told me that you can use any card to book the reservation and that I needed an actual credit card to pay. So we left to find out what we could do, and a few family membera/friends offered to pay using their card. We also had another another travel credit card from our Australian Bank, but we weren't sure they'd accept it. We go back to the booth and explain our situation. We then ask him to try both our cards and he agreed. He quickly swiped and then said that they won't work because they are prepaid cards. He also could tell I was annoyed with the situation and said "go on, ask anyone else here, this is our policy, everywhere will need an actual credit card". My partner then asked him if we could pay in cash... the man said, "Nobody uses cash anymore". So, I said it was b.s. and left. The man working that day was irritable, confrontational, not willing to assist, not willing to help find us an alternative ... just simply didn't care. At all. Fast forward to later in the day when I contacted National to cancel our booking. I spoke to a customer rep who confirmed with me that the employee should have accepted both of our Australian cards if we had proof of a flight leaving Canada. I couldn't believe it. Anyway, I submitted a complaint and will never use National ever again.