Bad service

I submitted a claim through King Price on the 17th Dec. From then I received zero feedback from the company. My windscreen was delivered last week in PE after I spoke to them on the 6th Jan 25 to say I'm going back to JHB and windscreen should be send to JHB. Well they said they made a note on the system and the glass will be delivered in JHB which did not happened. Again I had to keep on following up with then when I could expect my windscreen. After reading all the negative comments on the installations of their windscreen I'm slightly worried. I have a brand new car and do not want substandard service.