Worst Claims and Complaints Service ever

I logged a claim for a geyser the plumber come out to replace the geyser. However a day later the vacuum breaker started leaking. The plumber send out advance valves to replace the vacuum breaker. A day later that same vacuum breaker needed to be replaced. Advance Valves decided to appoint an external plumber to assess the geyser and its installation . The plumber found the pipes above the geyser leading to the vacuum breaker was to short it has to be 300mm and not 50mm. Which means the installation was done wrong. He even submitted a report with his findings and to date I’m still waiting for Ominsure to finalize the matter. I have even ref the matter to their complaint team but to no avail. My complaint ref number is ***. This claim has been on going since 11 July.