GODRICH TOYOTA - Definitely Doesn't Care

Received a notification from Toyota on a recall of the airbag and made a booking with Godrich Toyota for the replacement of the airbag at no cost. Arrived at Godrich early and booked in the vehicle. The lady asked if they can wash the vehicle and I clearly stated NO. Went to collect my vehicle just after 15h30 and discovered a crack approximately 20cm long right in the middle of my windscreen. Enquired what happened and Henk Faber the Service Manager walked out and said oh look a stone chip. Fact remains that there would be NO Crack if they washed the vehicle which I doubt caused it crack. My no cost turns into the replacement of my windscreen now at an inconvenient time. They did not even have the courtesy to call me and inform me that the windscreen had cracked while they were supposedly washing my vehicle which I did not request and stated as much. Furthermore - I am aware of 2 other stone chips which did not run so why this one right in the middle of the windscreen where they were working? I dispute the stone chip excuse.