Worst service received

I logged a claim on the 17th of February and the claim has not been paid yet.The assessor informed me that he needs to get a report and a form needs to be signed to authorise him to get a report on the car.This was done on 15 March and i was informed that the report will take 2 weeks to come ou***** over a month now and the report is not out yet and the claim is still outstanding.I am not receiving regular feedback from the assessor and he is now ignoring my calls.I called the call centre yesterday for the assessor to contact me back with feedback but still nothing