Poor service at BMW Sandton

Had taken my car for service @ BMW Sandton in around 22 December 2022, a week later water was coming out of my car when opening the bonnet i notice that the black knot on the top side of the water bottle (reservoir) was tempered with and broken. I approached the dealership and made them aware of the issue and i was told to drive the car in, told the service consultant that i cant drive the car because the water spills out of the car then she said i must call insurance to bring in the car. Oh before that she told me that the bottle had worn out, when it was clear that the knot was tempered with. Cut the long story short, she finaly escalated the matter to service manager who also said i must make a plan to bring the car in, meaning i was supposed to drive the car with no water from centurion to sandton for the manager to inspect. They went quite for a week and then came back to me and said "the manager says the bottle is worn out". Such a disgrace for a dealership like BMW to be treating clients like this. Mind you i have been driving BMW for more than 10 years and never seen such.