No feedback or resolution on Claim that is now almost 3 months old!

We logged a claim in December due to lighting damage to our whole home. A part of the claim was eventually paid after more than 6 weeks. We are struggling to get answers on our solar system that was also damaged. We get absolutely NO feedback from the agent assigned to the claim. If we don't follow up we hear nothing. And the last couple of days he is even ignoring our requests for feedback. We've asked to speak to a manager but this has has also been ignored now. There is no-one we can contact and nowhere to get answers. This is extremely frustrating and costing us a lot of unnecessary electricity fees. Surely it shouldn't take 3 months to finalise a claim!!