Dribe interview questions

After I applied for this position they called me and asked if I can visit their office for interview next week. Also, they asked to complete test assignment. I was surprised that company ask me to do task without any conversation but agreed. Now I regret because I spent 2 days for completing the task and hours during the interview and they never call me back. This is a nice example of company that doesn't respect your time and work. Completely negative experience.