I have rented a car from these folks, as I do nearly every month with many other companies. I had a weird feeling the moment I arrived at the airport and I discovered that they don't have an actual location. I had to call them to ask directions, to find out that their location is about 5 miles away. Once I arrived there I was greeted in a trailer office located in a parking lot. After completing all the formalities I asked clearly about the rate in case I had to keep the car longer. The representative confirmed that I was allowed to keep the car for as long as I wanted, the daily rate charged was the one agreed upon the rental contract.
After the expiration of my initial two days I received a phone call by a very rude operator with a very intimidating tone screaming at me on the phone that they were free to charge whatever they wanted. To return the car immediately or they would have blocked it remotely. Things unheard before.