I rented a car through them and was unable to get a car from the rental dealer they had booked through, as I had accidentally booked a manual and I needed an automatic. The rental dealer (Avis) offered me a full refund. They told me to reach out to the third party (rentalcars.com). They explained to me that rentalcars.com would reach out to them and they would confirm refund. I was promised by Avis 100% refund, otherwise I would have never left that building without a vehicle. I would have retaught myself how to drive a manual (drove in high school but hadn’t driven in a while) before I would have let $1300 go down the drain. So I reach out to rentalcars.com and they refused to give me a refund. A refund that was promised to me by Avis. I have learned my lesson… I will NEVER NEVER EVER book through rentalcars.com again and you shouldn’t either.