Safety concerns and no accountability

Unfortunately, the property I rent is managed by Trafalgar. When the geyser broke last year, there was over a 4 day delay in replacing it and once it was replaced, we then had to have the plumber return twice as he connected the water valve incorrectly. In retrospect, I should have asked for the plumbers credentials. Now I've reported an electrical fault (a safety concern) without response. The emergency contact number also does not work. These are serious safety concerns. No longer just negligence. Opening themselves up for serious litigation. When the electrician leaves, best believe I'll be asking for the electrical CoC