Kaelyn Building Projects non-existent After Sales Service + Snags

I hate to write this bad review about the after sales service of Grant Strauss and Kaelyn Building Projects, as we had a good relationship during the building of my residential extension and cottage. But a year later, my cottage geyser is still not working and my tenants have had to ***gyback off the main house geyser, which costs me electricity and means that we run out of hot water during winter. Also, after joining the cottage hot water supply to the house, there has been an ongoing leak in the ceiling of the cottage, at the join of the pipes, which has twice caused the ceiling to crumble. Once, Grant Strauss sent a workman around to fix it but all he did was skim the ceiling and paint it - they never fixed the leak at the same time and now the skimming has collapsed again. We make appointments for Grant Strauss to come and do the snags (there are a few more than just the cottage geyser and leak) but every single time, he never pitches up and I hear nothing from him. This has been going on since August 2018.