Threatening to go to court has no use for the insurance company. It is very difficult to charge the insurance company or the individual adhustor for any wrong doing as an outsider.
You need to sue the other driver.
I had an accident myself several years ago in CA. I had no loss to claim and the other party had no insurance. The other party was determined to be at fault by my insurance company and my insurance company refused to compensate the other party for the scratch. My insurance company warned me that the other party was upset and threatened to sue ME, and advised me to be prepared. But nothing happened afterwards.
You need to sue the other driver.
I had an accident myself several years ago in CA. I had no loss to claim and the other party had no insurance. The other party was determined to be at fault by my insurance company and my insurance company refused to compensate the other party for the scratch. My insurance company warned me that the other party was upset and threatened to sue ME, and advised me to be prepared. But nothing happened afterwards.