I have experienced this with several companies. I will revisit each area to discover why the response was challenged. On occasions I will discover that my response needed a small tweek to better align with the question it satisfies. This helps me improve the quality of my future work.
If I can not identify the problem, I politely and professionally respond accordingly. I understand that I am not perfect so I treat others the way I expect to be treated.
For anyone that drops a company over something like this, that's fantastic as the less competition the better as far as I am concerned.
My posts are solely based on my opinions and for my entertainment, contact a professional if you need real advice.
When you get in debt you become a slave. - Andrew Jackson