Accident third party claim

2 months ago I got involved in an accident that was caused by JT international employee with the company vehicle and I’ve lodged a third party claim at the company’s Insurance broker AON . AON sent me all the necessary paperwork then I filled out everything and sent back to them and they’ve acknowledged that they have received them and everything is in order . To my surprise when the claim is supposed to be finalised the AON is sending me an email that they can’t process the claim as they are waiting for their client as JT International to pay a B Excess claim of which the JT international is disputing to pay . And now I’m stuck between the two parties who can’t seem to get a common ground on this issue. And no one from JT International wants to take accountability on this whole thing. AON is simply waiting for them to adhere to their policies as per agreement. Now I’m suffering unnecessarily.