[mouseketeer84]

Thank you all, only just managed to get back on here

I phoned the American Avis number today, they said I have been charged $153 as I took the car back with less fuel that when I picked it up! I took it back full!
Luckily I kept the receipt from the gas station on the way to the airport, so I have to email them across to try and get a refund!
So please people, query everything! Even though I double checked there was no fee outstanding, they just took all that money without raising it with me first.

Thanks for your help