Thrifty Car Rental

Worst car rental company ever !
I have hired a truck at Thrifty (Maroochydore) for 7 - 11 January 2014.
For a price incl. insurance and 2000km : $1844.30.
But on 7 January at 8 AM when i want to pick up the truck there was no truck ?
So I had to cancel my hotel and arrange a truck company to pick up the goods that i had bought on an auction in Villawood (NSW).
The cancellation cost of the hotel is : $129.- .
The cost of the freight company is : $3685.- .
So $3685.-(freight company) - $1844.30 (Thrifty) = $1840.70
So the extra cost i have is : $1840.70 + $129.- = $1969.70 .
But Thrifty don't want to pay my extra cost , so my proposal is that they only have to pay half my cost : $984.85 but still don't want to pay that.
So my advice : never rent something at Thrifty (Maroochydore) , it will cost you afterwards very much money.