I booked $1,500 3-week rental for a mini-van in Austria. Same day of booking I arrived at airport and the rental car company didn't have the vehicle I needed, so I cancelled and went with Avis, who had what I needed. Now rentalcars.com charged me the full amount, saying that I can't cancel less than 48 before the pick-up. How can you cancel more than 48 hours before if you booked the same day of arrival? Also, how can one be expected to pay $1,500 for something they did not receive? This is fraud, and I am disputing with my credit card company. Whatever special deal you think you will get booking with rentalcars.com, believe me it's not worth the risk. Don't do it. Use a real company and don't pay anything up front. No voucher, just a reservation. Warn everyone you know... do NOT do business with this company. If my CC company doesn't charge this back, I am going to sue rentalcars.com. I don't care if it costs me $20,000... as long as it costs them more than the $1,500 they are trying to STEAL from me. They will not make a DIME off of me now. Had they charged me some reasonable cancellation fee (under $100) I might have grudgingly paid it. But no way are they getting a penny from me now. I will see them in court first. At this point it has become personal.