Faulty Equipment with Zero After Sales Service

I recently purchased a Pajero Sport and took delivery of the car in February, I soon discovered that the media centre in the vehicle was not functioning 100%, the manual that was issued with the vehicle was the incorrect manual, the vehicle has been back to Cargo Motors Bedfordview a number of times with no progress made at all. Currently I have not heard a thing as to what Mitsubishi is planning to do on rectifying the issues. All I do know as is that if you are contemplating buying this brand of vehicle beware of the absolute lack of after sales service.