3 months claim not settled

I have a claim with a Discovery Insurance through a 3rd party claim. My first contact with the insurance company was on the 20 May 2022 .. Then and Agent sent me communication via email and I sent the neccessary reports to start the process. Its been 3 months and the claim is still not validated it's still hanging there after numerous calls, emails to the Agent from Discovery. I even went beyond the Agent and spoke to her manager who said I should get a answer by the close on business on the 4 August it's been almost 2 weeks since I spoke to the manager no call's or emails regarding the claim. When I do call they say they can't get hold off their client. I submitted a full report showing that their client was at fault and the car disc on their client vehicle was expired. I spoke to the manager and said please come to a conclusion so I know what steps to follow if I'm going to pursue the claim legally against their client ... Still know response and its 3 months and my vehicle is at home waiting to be repaired ... Please assist me Hellopeter I tried following the chain of command with the manager still know success this is my only option