Car trawler
Overcharged

I was charged $380.00 AU on the internet when I booked a rental car through thrifty. When i picked up the car I had to pay the full fee and thrifty informed me they do not charge any fees over the internet, nothing should have been charged to me credit card. So I then had to pay out the full fee -$730.00 AU. Where is my $380.00.