73 days after claim still no window

I submitted my windshield claim on 15 January of this year, today is the 25th of march, the car is still standing with a broken windshield, the service provider is Silwerlakes Glasfit, not once have they returned a call to me, I have numerous times called Daildirect to complain about this and also have not once received a return call resolving this issue! I went further and asked the manufacturer of my vehicle about the order time of the windshield and from their side they have assured me that no matter what part I need for my vehicle, if it needs to be order it will never take longer than 21 days to reach me, I'm now on day 73, so much for reliable service, both Daildireckt and glasfit especially.