HLV Rental Properties interview questions

I was asked if I did multi-threaded coding, which I explained I do not. My experience is in C/C++/C# but for the last 10 years only in the Unity engine, which is not designed for multi-threaded code. The interviewer insisted he understood coding in Unity but was unable to put together any questions relating to the field. He became frustrated and began insulting me for a lack of experience at which point I ended the call. During the call he explained he was hiring for a different company than the one listed, their primary product being blockchain-based HR solutions. I did not inquire further.