Disappointing service in light of a breakdown (of a new car!)

Hired a Seat Ibiza or similar - received a Toyota Yaris, which is more of a budget model than I would have expected. The car was brand new though so that was a plus. Initial pickup was fine, but car was experiencing major faults when idling - twice the engine fully cutting out at busy roundabouts. Decided car was not fit to drive so once we finally got the car going again we drove back to the pickup point. Service centre were very quick to identify a loose battery connection, and also told us (then!) as to a trick with the Yaris that needs a double-pump of the clutch. Can't fault the service staff, as quickly resolved the issue. Annoying not to be told about the clutch particular though, as that should have been mentioned at collection of the car. Car was ok for the rest of the trip. Most annoying part has been communication with the head office since, where I have asked for some compensation to cover fuel and road tolls we incurred as a result of going back to the collection point to have the car fixed. Very little understanding and no empathy whatsoever. Really disappointed with this and won't recommend this company as a result.