I WON'T REST UNTIL MY CAR IS PUT TO ITS PRE ACCIDENT CONDITION

I was involved in an accident in August of 2023 wherein another driver skipped a red-light and bumped into my car. The person who caused the accident was insured with iWyze and as a result, I levelled a third party claim against her insurance. There was a video clip of the collission and an eyewitness witness which both were sent to Quest Claims Solutions , they advised that they'd do an assessment and revert to me. AFTER HAVING WAITED FOR ALMOST 5 MONTHS, they send an email to say my claim wont be covered because own client's damages were not covered.

How is this even a valid reason for repudiating a 3rd party claim????