TERRIBLE WORKMANSHIP/NO BUSINESS ETHIC

I had my yard paved through Johnsons paving in December 2023 and paid for extra pavers to keep as spare for future use. Had to pay a deposit which was not a problem, balance to be paid on completion. They started the Monday and completed the Thursday. We only went into the yard the Saturday morning, wanting the paving to set properly. I found the grouting cracking and flacking. holes in the grouting, and the paving very uneven which is hazardous as anyone can easily trip due to the unevenness. I contacted John Nicholson who owns the business, and waited a few weeks before 1 of the guys were sent back. he just sc****d and chiseled some grouting, chipping some of the pavers, and was done. I had to stop him of chipping the pavers & asked who is going to replace the chipped ones. He showed to my extra pavers I purchased spare. He left the paving uneven, chipped and the grouting still flacking and cracking. The job entailed paving 18m2 of pavers, but I purchased 20m2 in order to have an extra 2m2. John initially wanted to convince me the extras were used for the pavers that broke when they installed it. they manufacture the pavers themselves, and their guy doing the installation said the pavers were poor quality that broke. I will never recommend them. When I told the owner about this, he just read my message and didn't see fit to respond as he received his R21k.