Hyundai Menlyn - Ignoring their customers

My new Hyundai's windscreen had crystal fusion app**** to it. Unfortunately a stone cracked the windscreen and had to be replaced. I send a query to Charlene Swanepoel at Hyundai Menlyn to advise me the way forward to get the crystal fusion back on my windscreen. Two weeks later and numerous calls to the branch and I still don't have feedback. So much for treating customers fairly