I booked a car for my trip in Brasil, my credit card was charged I arrived to the counter and my flight was delayed. The Brasilian company that had my car said that it was released and no longer available and I can't reuse the booking I had with rentalcars.com I would have to contact them directly to get the refund. So I had to make a whole new reservation, I tried to contact them from Brazil but it was impossible, so when I got back home I tried all the local numbers they have on their website and non of them existed, so I finally called there UK number (long distance) and the recording gave instructions to follow on their website. I did that, I was told that my claim is being reviewed and that they will get back to me. I waited a few days and I got a response from them saying that the car was on hold for me and that since I missed the pick up there will be no refund for my payment. Keep in mind that the rental was for a full month and they had charged the full amount upfront. They didn't even bother offering a voucher to use in the future, worst service I ever saw in my life, if I could give a negative star review I would.