I was just scammed 125SEK (20$) on fuel.
I drove a diesel Volvo about 180km, which should take max 10liters = some 140SEK at pump price. Refuelled some 136SEK before returning the car, but the gauge did not show full -> refuelled again but the pump did not want to pump anymore. On return I told this (driven 180km and refuelled, but gauge showing near-to-full), and the AVIS rep told me "no problem, if there is really a liter missing, it is OK".
Got the receipt and OK. Later checked my credit card and found 125SEK higher charge, requested a new receipt at AVIS and saw the new added 125SEK fuel cost!!
No reply from them. I am furious about these scams. Not for the tiny 20 bucks but for the nuisance and effort to try to fix things spending my time. Question of principle.