Vaal Pool Services - Poor after-sales service

Swimming pool required re-paint, new inlet and outlet pipes, new filter sand and a new weir. In the end, the light also had to be replaced. Two weeks after the installation was done, it was noticed that a section of the mosaics had some sort of covering over it. I phoned the owner and he said I must just use a kitchen dish wash sponge to clean it. I tried it on several occasions but it does not come off. I reported it back to the owner and he said whenever he is in the area (yes, I have to wait for him to be around before he would come and sort out issues!), he would come and fix it. It was also later found that the light he installed, moved / came lose. It was skew from the beginning and probably not installed correctly. I reported this to him as well as it is part of the work he had done. He eventually agreed to a date to come and fix the issues (Monday 04 December 2023). A night before the date, I reminded him of our appointment to which his reply was that he said I must phone him on Wednesday - 06 December 2023 to request him during his lunch time to come and fix the problems. This is not true as I immediately informed my wife that he would come on Monday 04 December 2023 after our first discussion for him to come out. I phone him several times as per his request on 06 December 2023 and he did not bother to answer the calls or respond. Needless to say - he did not pitch up to fix the problems. In his signed quotation, he committed to a one-year warrantee on the work. It has not even been 6 months, and he is unable to stand up to his committed warrantee. All I'm asking is that he fix issues that would probably not even take 2 hours but he is unable to deliver on the service committed to.