Poor service delivery and vandalism

I appointed Shaab Construction to do renovations to my pool. A 5 day job turned out to take 7 days and throughout, there was no supervision, as I was promised there would be. After the paint dried and I was able to inspect the pool I noticed some issues and requested the contractor to return for the corrections to be made. Unfortunately, by this time, I already paid the contractor in full and he just wasted my time and did not pitch up for some of the appointments agreed to. When I got annoyed and insisted that the problems get resolved, once and for all, he dropped of one person whose only objective was to do damage. Subsequently, I have a pool with very rough patches on the surface, because they threw out some old paint (with pieces of harden paint in it) on the surface and started to spread it on the surface. I will now have to get this sanded down and repainted at additional cost before I can use my pool again.