Delay in finalising claim

We experienced a storm on 30 November and lodged the claim with Momentum on 1 December. To date our contents claim has not been sorted. Momentum sent a service provider on 12 December to test our electronic items including our dishwasher (that was not working). The service provider compiled their report and stated that the dishwasher was in full working condition - despite the fact that he opened up the item, tested same and confirmed that it was not working. Photos were also taken with a clear error code on the dishwasher. After we disputed same, they again sent out the service provider to test the dishwasher. After numerous follow ups the matter has not been sorted and no updated report has been compiled. On every follow up, I am just informed that the report has not been finalised. Notwithstanding all of this, we have received requests from their salvage department to come and collect items (although the claim has not been finalised). On arrival at our home address, we had to inform them that they cannot collect any items yet as the matter has not been finalised. It has now almost been 2 months to sort out a simple dishwasher.