Failure to deliver

We are also having major issues with av Jennings sekisui house. We are building in Melbourne and the amount of staff restructuring they have had over the last year and a half have affected the building pace of our new home. We were told it will be finished in 5 months is now 6 months on and we have been told its still couple of months away.
I will taking some issues further as we are definitely not happy with the constriction of the house and faults everywhere. No one seems to know anything and I find it so hard to get through to someone about my issues.