Disgusted and annoyed - service centre damaged my Ertiga

I am absolutely fuming right now. I left my Suzuki Ertiga at Suzuki Centurion to get the clicking sound fixed when turning (apparently something with the cv joints or wheel bearing). I had the same thing last year March 2019. It was fixed and 9 months later the sound returned. So after leaving the car there for 2 weeks (yes no jokes) and absolutely NOTHING fixed. They still have to load the claim etc. So I went to fetch the car this morning and guess what?? A nice crack on my windscreen that was DEFINITELY NOT there when I left it there. I am so disgusted with the service, with the poor communication, with not atleast looking after my car... The previous service they also didnt even properly attached the air filter box. I am seriously doubting their abilities and I super frustrated with how long everything is taking! I need URGENT ASSISTANCE PLEASE!!