Bad service

I booked my car for service at Volkswagen Claremont Cape Town,on Monday 2024/10/21 for Friday 2024/10/25, I was informed that it’s going to cost R2300, I was contacted on Thursday for confirmation/reminder and I was informed that the price had dropped to R2100. Today I took the car in for service, inspection was done in my presence and I was told that the car will be further inspected on window screen, I agreed. The first page was the invoice of R2100, as I was signing the pages I came across another invoice of R1885.87, I asked about the invoice and I was told that I was going to be informed that the fee decreased. I left the car for service,When I got home I was contacted and informed that my windscreen has a chip and it’s going to cost R350 , I asked for it not to be fixed as I know that I never saw a chip on my windscreen . To my surprise when I went to fetch the car my windscreen now has a fresh chip. You did me dirty shame.