I used First Car rental in June. Car was fine, returned a few hours late so I was hit with an 80 euro charge. Annoying but my fault it was late.
However I've just been hit with a 175 euro credit card charge 1645 rand for damage to the car not covered by my zero excess insurance.
The car was returned in perfect condition and confirmed when I returned it.
I got no documentation or anything from First car or the broker. The broker are investigating the matter.
Just be wary when returning a rental car and take lots of photos. It happens all over the world but some companies do it a lot more than others so be wary of First Car.