I recently booked a car trough the CarTrawler service for Teneriffe. But before I arrive I found out that the T&C were not OK for me so I took advantage of the free cancellation policy that CarTrawler offers and booked with another company with better T&Cs. Later, my flight got moved to an earlier hour so I contacted CarTrawler and informed them about the change of schedule. Everything seemed ok until I arrived at the airport and wanted to pick up my car. It turns out, they didnt change my pick-up time, instead the support only 'noted' it, whatever that means. So I called them and said I want to cancel my reservation, because waiting for 8 hours at the airport to pick-up my car was not an option. I was ensured that this is OK and my reservation will be canceled. Now, after the fact, I see that no money has been returned to my account, not for the first cancalation (bad T&Cs) not for the second one. So yeah, it is a scam and a good idea only for anyone that wants to bleed money to these MFs.