3 months ago i took my bmw into a garage to have a new turbo fitted. They had the car for a few weeks and kept saying it would be ready soon. Then before xmas i was told that the engine had been damaged (something to do with the timing chain), there was valve damage etc and it would need the cylinder head removing to check the damage. At 1st they said it was their fault but then changed it to it wasn't actually their fault but as it had been in their possession at the time they would repair the damage at their expense. 3 weeks later i finally got informed it would need a new cylinder head which they were organising. Every week since i have been told it would be ready, then each week there is a new problem (computer management system, injectors, high pressure........). This week i have now been told that they didn't actually change the head (even tough he told me face to face several weeks ago that the new reconditioned head was arriving that afternoon) but instead have replaced the whole engine. The car is still not working and quite frankly i do not want it back as it is a different car now! My service history means nothing and i don't have the confidence after so long in the garage that it won't break down in the very near future. Does anybody know if i have a case to take the garage to court?