Standard Bank homeowners insurance

I have submitted a lightning claim in November 2018. A contractor was appointed and the damaged inverter was replaced but never worked. I have informed Standard Bank on a weekly basis that the repairs was not completed as the new unit was either faulty or incorrectly installed. The contractor completely ignores me and when I call Standard Bank they keep on telling me they will call the contractor. It's been four months already and I am still waiting for Standard Bank to manage the poor service provided by their contractors