Poor service

I purchased a demo t roc a few days ago from Vw fourways , the day I collected my vehicle I noticed a chip on the windscreen before I left the dealership, the salesman had assured me that this will be sorted by the dealership as the dealership charged me R2500 for a crystal fusion protection which was done over the chipped windscreen which I was not aware off . After speaking to his manager this was not the case. I was told that the windscreen chip will only be replaced if the chip lead to crack! The manager was extremely rude and had an attitude problem, not sure if they were trained on customer service! I will never recommend anyone to purchase a vehicle from them after the conversation I had with the master cars manager