If I could give negative stars I would.
Crooks. Plain and simple. They claim to have sent the money I paid Expedia, which was $498, to rent a car from Sixt in PIT Airport. Then Sixt told me that Expedia never paid them so I would have to pay at the desk. Then they proceed to charge me with another $570 plus $200 deposit too. They said to call Expedia to get a refund on the original payment. Called Expedia and they said no Sixt does have the original payment and that they need to issue the refund. After getting the run around for 7 days, I had to call my bank and report the charges as fraud. My bank confirmed that yes Expedia and Sixt did both charge me almost $1200 between the two charges.
All in all run as fast as you can from these companies, Sixt and Expedia!