Of course, I will fill the claim to my credit card company as soon as the transaction appears. I have a statement with transaction on the nearest to them gas station, with it's number. I went there from highway (found by GPS) to return as full as possible tank because their Hertz price was more than $9 per gallon.
Anatoliy
One of my friends garaged his Jag for a week when he went to Europe. When he got back his tank was almost empty, and there were empties in the back. Few weeks later he gets the speed-cam and red light tix from the local gendarmerie. This is what happened w your rental from Hertz.