Failure to honour or reject a claim within a reasonable time

After more than 6 weeks of putting in a building claim for lightning damage to inverters Standard Bank Insurance have rejected the claim. Multiple assessors were sent to the property and after finally getting a report from the last assessor the Bank has rejected it claiming it was not due to lightning damage. It is unacceptable for a customer to have to follow up daily to get a status. 6 weeks have passed where I have not been able to make a decision to fix the system due to waiting for Standard Bank. It was very clear the damage was caused by lightning.