Very bad customer service

More than THREE weeks ago my car window was smashed and broken into. My insurance is with ABSA. Since then 24 Fix (that ABSA uses) turned up after 2 weeks with a wrong window, just to leave to fetch the correct on, never to return. The next day our appointment was for 17h00. I waited and waited, no one pitched up. Eventually 3 days (Monday) later they pitch up and fitted a window which was faulty. By Friday the operations manager Donovan Fourie, came to inspect the window which he indeed had found to be faulty. He promised to get the correct window and to PHONE me himself and keep me up to date, which he never did. Today they said the correct window arrived. I made an appointment with them for 16h30 today. I asked Donovan's secretary Leandra Barnard to please make sure they turn up in time. Her sarcastic response was that \the technician will try his utter best to be there at exactly 16h30". It is now 30 minutes later and again no one turned up. 30 minutes late!! This is the worst company and customer service i had ever come across. """