BAD SERVICE

My Hyundai i 20 went in for a noise on the front wheel and after HAVING A ARGUMENT ABOUT there wrong assessment they replaced the top shock mounting. When I went to collect my car there were 2 cracks on my windscreen. Collin says they do not take responsibility for any cracks on windscreens. He says the windscreen cracked because the car got jacked up in the workshop. I am not satisfied with his reply. I will wherever possible advertise bad workmanship and make sure that Hyundai NEVER touch my car again. I was on the verge of replacing or trading my car in for a new Hyundai but after this ......NO THANK YOU.