Momentum Assessors opinion against client's facts.

I was involved in a car accident on the 02/11/2019, The response from Momentum was satisfactory and my car was taken to Newco Autospray. After collecting my car, I realised there was a knock sound from my left front wheel suspension and I notified Newco Autospray management about my problem. They notified Momentum about the shock mount on the left front wheel which was related to the accident. The claim was declined because Richard De Figueiredo Assessing Manager at netassess made an opinion that the damage was not accident related. Prior to the accident, I have never heard that knock prior to the accident and now I am being taken from pillar to post for the past three weeks. My fate is determined by Richards opinion and my facts are not being considered. I am disappointed.