3rd Party claim not being dealt with

I have a 3rd party claim ongoing since October 2018 and I have not received feedback till date other than they are waiting for documents from their client . Bryte Insurance has a 30 day response time and today is the 4th of Feb 2019 and still no response from their claims handler John Dadswell . I have called , sent emails and no response . The accident even clearly states their client is guilty and it is quite blatant they don't want to pay. I have been caused so much inconvenience driving a vehicle with no side mirror and smashed.