Very poor service

I am shocked that a dealer of this stature can sell motor vehicles that they cannot provide a backup service with spares for. I have a 2016 Mitsubishi ASX standing at the premises for 3 weeks waiting for a spare part to be imported! Further to this they had my vehicle on 5 separate occasions for the same fault over a period of a year starting when the vehicle was under warranty (They could find nothing wrong) and now they are saying the vehicle is out of warranty and the cost of the repair is for my expense. The staff is arrogant rude and think they are doing you a favour by doing business with you rather than the other way around. On principal I will not do business with them again.