Nonsense 3rd party claim

i did a 3rd party claim with this insurance, their client admitted to being in the wrong, my statement, the witness statement and their clients statement says the same thing, however apparently the accident is still 40% my fault because i must prove what i did to prevent the accident, in other words i must show what i did to stop their client for not stopping at a stop sign and only stopping in the middle of the high way to observe. i have also been asked to provide a video of how the accident happened (i didn't know using a phone driving was now legal and supposedly i was supposed to know an accident is supposed to happen and be video ready. its almost 2 months now without a car and incurring costs for transport and storage. this was supposed to be resolved within 30 days but guess what i only received response over a month later.