PG GLASS service sucks

My house recently got damaged from the hail that hit some parts of Johannesburg a couple of weeks ago. A storm claim was submitted to my insurer and they appointed PG GLASS to fit the broken windows. PG GLASS called me early week 49 setting an Appointment to fix the windows mid week 50 which is one an half later. I agreed cause they informed me they had a lot job to service which was fair. On the 09dec15 around 3PM I gave them a call asking them of the Appointment and they informed me that their guys are in the area and will pitch to fit the windows, before 5PM I gave them a call again and they informed me that their guys are on the way and will pitch to fix the windows. I called them again this morning as nothing was done to my house and they promised to give me a call. They don't update, I have to call them to find out what's happening. I'm unhappy with their service