Horrible service

I have a value add insurance and made a warranty claim for my car on the 17th of June for the water tank and thermo stat to replace as they’re damaged. To this day almost a month it’s been a hassle to get timely feed, if I don’t call there’s no communication, I’m so dissatisfied with their service, every fourth day they want something new to be sent because they’re not satisfied with they’ve previously asked for. I have had no car for four weeks and they couldn’t be bothered at how it’s affected me, I have suffered and will continue to suffer because even today after waiting on hold for 25 minutes while my call was being transferred they still asked for more things after another assessment