Mercedes centurion learn from tge so called backyard mechanics

36000.00 later end November 2023 and my car still a mess . Windscreen washer system replaced but still don’t work went back twice . Wheel bearing and knocking noises still a major issue , was supposed to be replaced twice . Sadly the service advisor is calling me back from Jan 2024 . The service manager thinks we don’t know about cars until you prove him Wrong . Until I park my car through the showroom windows they’ll attend to the problem if at all .!!