Quartz Carpet Failure

Colours for Africa laid a Quartz Carpet in my pool area in 2010. Towards the end of 2020 I had the same company replace their product with a new coating at a cost of R72,750-00 A year later the quartz carpet is patchy and gritty to the extent that one cannot walk with bare feet. Morgan Dhlamini, the owner, promises to come and see me but never shows up.