Hyundai Boksburg cracked my windscreen amd refuse to fix it

I took my company car to Hyundai Boksburg 2 weeks ago for a 165 000 km service. When i went to collect my car i found the windscreen cracked from bottom left to top right. I got the service adviser to look at t before i took the car. Our buyer has since been battling to get them to fix my windscreen and they say they wont fix it as they received the car like it with the cracked windscreen. I will not.pay the R600 excess to fix it as i dis not drop the car off with a broken windscreen. I have only had bad service from the Boksburg branch as they lost my service book with the previous service and had to issue a new one with just a print out of all the previous services it already had.