Cross examined by MiWay assessor for more than 3 hours

Last week friday I was involved in a car accident and logged a claim with my insurer,miway. Yesterday an assesor by the name of Piet called me to make an appointment with me to get a copy of my driver's licence and my ID. Today he came to my workplace and ask that we sit somewhere private and do final touches on my claim and to my suprise the man started cross examining me about my routine from the minute I woke up in the morning, what I did at work, who I left work with and what did we do? Started calling my collegues who were not even there when the accident happend, cross examined them from tip to toe in the middle of a working day. He ended up telling me that he's going to finish up the rest of his investigation but when he comes back is not going to be a good talk. He even left without even asking for a copy of my ID and my drivers licence, Clearly that was not what he came for. What kind of customer service is this!? What started like a quick briefing session ended up as a 3 hour cross examination of me and my colleagus.