Absolutely schocking windscreen fitting service

If you need a windscreen replaced go to anyone except PG Glass. I have had two done by the same with no hassels but this last one is an absolute nightmare. On Friday the 18th February I took my son's car to PG glass Kimberley to have a new windscreen fitted. They informed me that they did not have stock for the Hyundai i30 and would need to order it. On Tuesday 22nd February I got a notification from my insurer to say that PG Glass was appointed to assist me. I phoned the branch to be told that they were waiting for the part number from headoffice. I then phoned head office and explained the situation. They asked me for the claim number which I duly gave them. They said the claim was registered and did not know why the Kbly branch was not aware of it. I then phoned Kbly branch back and suddenly they knew about it but said the windscreen was out of stock with their suppliers (Shatterpruff). A few days went by and when I phoned PG Glass they said it was on its way and would be here on Monday 28th February. A while later PG Glass phoned to inform me that there was some hassel and it would only be here on Friday 4th March. The car was booked in for Friday at 08H00 which would still give enough time to go throught the roadworthy as my son was coming down from Pretoria on Friday at midday to fetch his car. We took the car in on Friday at 7h30, were busy filling in the register and key tag when we informed that the windscreen was not there. It did not arrive on the truck. Well I blew a gasket . They phoned all around and could not get hold of anyone to find out why and where it was. They said they would get back to me within an hour. Well it was about two hours they phoned and said it was in Bloemfontein and they said they would go and fetch it an install it on Saturday morning. I said it was too late as I had already cancelled my son's trip, they could install on Monday. Well I took the car in today (Monday) at 08h00 and was busy filling in the register when (I assume it's the manager) informed me the windscreen was there but it had a big scratch across it in the drivers view. Well how does that happen? He said he would get back to me within an hour, so we left for the second time. I'm still waiting and it is now 16H30. This is completely unacceptable. This windscreen needs to be fitted before this coming Friday 11 March as it needs to redo the roadworty as the grace period has expired thanks to PG Glass. That's another issue. Will PG Glass pay for the test? I dought it. I get the impression that there are employees at PG Glass who sit there earning a fat salary doing absolutely nothing and could not care a continental about their customers, or otherwise I would have had a windscreen fitted by now. I would like answers, but they are not fortcoming. So as I said initially, If you need a windscreen fitted, go to anybody except PG Glass Derrick Beangstrom