Second hand car sold with wrong keys

Two years ago i bought a car with 3000 km on was told car is spotless and new.Car was taken back many time for days at a time to sort out problem with no success.Car has been with them now for 3 weeks and i went there this morning only to find out car has been booked in today.Now they only want to start ordering parts that is needed.I think this is the worts service you can get