Third Party Claim Hell!!

Discovery Insure client knocked into my bmw, jumped a stop street, with 2 kids in the car, causing major damage to my bmw. This accident occured on the 25August 2017. I have given all relevant documentation to them. The assessment has been done etc. The claims advisor never responds to my emails or calls. They are avoiding me like the plague. Im sure their client has been compensated long ago , and I am still without a car. The claims advisor assured me the claim would be finalised within 30 days, well its been 3 months almost! The worst Insurer ever!!