CAR HIRE ******* AND UNPROFESSIONAL! dont use them!

I booked online through travelstart they sent me a link it was Hertz /firefly that I hired a car from. I booked for 5 days and had to return home after 3. They would not refund me for the two days or the two days insurance and still charged me for extra fuel when I had already filled the tank at the airport garage. Its is a totally unprofessional con car hire place AND PLEASE READ THEIR CONTRACTS!! NEVER AGAIN! everythin done via email no calls and you get shuffed from pillar to post.