When qualifications and experience fails

Our recent claim was repudiated when the assessor made unproven findings that the spacing of the brandering of the roof is 560m which according to him is outside of building standard. The assessor was in our house and I did not see him measure what he claimed was outside of approved building standing. The burning question here is how many homeowners know what the brandering space must be. Secondly as a homeowner must you just accept what the assessor claims to be his/her finding. I doubted his assessment and challenged him to prove it to me in my presence and I am met with silence. I first WhatsApp him then mailed Discovery with photos I took which I believe proof that the brandering is within the insurance mentioned accepted range. The challenge to proof me wrong and assessor remains open. I just hope ethics will prevail where a mistake was made for Discovery to own up and do the right thing and NOT MOVE THE GOAL POSTS. I firmly believe I am prejudiced and suffer consequences. It pains me there is homeowners out there unaware of what the brandering spacing must be paying premium diligently only to be met with this conundrum which I may add is not asked when you apply for the insurance, WHAT IS YOUR BRANDERING SPACING and at that stage the insurance is either accepted or declined, not at claim stage