Discovery Unsure

We had a fire in our house on the 3rd July. Initially Discovery Insures service was fantastic. We then put in a claim for our contents that were damaged and were told that we could add to the claim at a later stage which we have tried to do but after many subsequent mails to Lebo Makgato who initially handled our contents claim all our emails have gone unanswered and we have been unable to contact her. We emailed her supervisor Natasja but got an out of office mail. The email address that Natasja has on her out of office does not go through. Also cannot get hold of her by telephone! Who else can I speak to for feedback on my claim? This is ridiculous!