3rd party claim not taken serious and Zenith Insurance lawyers WELGEMOED ATTORNEYS decided for the insurance not to fix my car saying its my fault whereas the person who bumped my car acknowledges it is his mistake and taking full responsibility

So the guy from Camperdown company in Rustenburg mistakenly bumped my car from behind in a four way stop, we exchanged contacts and everything, the guy acknowledged and took full responsibility of his mistake, did the statement and submitted a claim for both his car and my car to his insurance (Zenith through Nedbank Insurance). Nedbank forwarded the 3rd party claim to Zenith insurance and Zenith sent it to their lawyers Welgemoed Attorneys who are now responding to me that "Our client's driver confirmed that you made aa sudden emergency stop, approximately 3/4 lengths from the stop street, kindly confirm the reason you made the sudden emergency stop." I the responded to them that there was NO sudden emergency stop from my side as the incident happened in a four way stop and were 2 cars in front of me and I stopped as usual . The frustrating part with the whole thing I am the one who is following up with every about this, its been more than a month now. I had to call these lawyers to alert them that I responded to their e-mail and even sent a follow-up e-mail requesting a final outcome, a week later, there was still no response from them or Zenith. I had to call them and inform them that I responded to their e-mail and I am awaiting feedback, that's when they told me that they are not going to fix my car because of the reason they stated in the original email. I requested that they respond to their client who submitted the claim so He is aware that they decided not fix my car , then they told me I can inform them myself referring to the e-mail they sent. The frustrating thing with this whole situation is that Zenith in not informing their client that they are not going to fix my car. I am the one one who must do all these back an forth communications but I am the victim in the whole situation and worst part, the person who bumped my car is accepting and acknowledging his error but his insurance is having their own version of the issue.