Service let down

Our tv unit amongst other things was hit by lightning in Nov2018 and was repaired by a service provider as per Outsurance request. When we received the unit back it was not fully functional due to the USB ports not working. It was collected again and the same issued occurred whereby the soundbar would not even be picked up. Outsurance arranged for a different service provider to have the unit collected and returned with no fault. I then tested the unit with the technician on site and he agreed that the unit is not working as it should. I have been battling to get any results from Outsurance which is unacceptable.