When I hired a car in Ibiza in January, I paid for an upgrade to a "Renault megane DCi or simelar".
I get there - book in.
"Fuel is upfront, sir. You have to pay for the car to have a full tank of fuel here, and you bring back empty as possible"
Fair enough.
Get the keys, and go outside to hunt for the reg number.
Hmm.... this doesn't look much like a Megane DCi... erm.... that's because it's a Bright Green rollerskate Cheverolet MATIZ! (with an 800cc lawnmower engine, as opposed to the commonrail turbo diesel I'd booked).
Went back into office and politely explained... "Sir, Matiz/Megane, are the same class of car, we have no others". (Despite lots of Megane's seemingly sitting there, out of season).
Went back out to the Matiz... loads of damage all over it, not on the paperwork.
So go back in again - point it all out. He scratches all over the diagram "Don't worry, just drive it!"
So I have a complaint that I
A) paid money, for an upgrade that I didn't get
B) Was charged 59 Euros for fuel.... yet... the Matiz only had a 35 litre tank, which cost about 34 euros to fill.