Chilindo NET Developer interview questions

The worst job interview experiences I ever had. First they gave me a week to build a simple project with some mandatory technologies. After sending them my works, they invited me to a meeting with their CTO one week later, which he didn't show up. Then they sent me another email to reschedule the meeting to next week, in the response email, I just said that I hope this meeting wouldn't be postponed again and they said "all of the schedule given to you has been carefully coordinated and I think this type of attitude might not be the one we are looking for". I mean it's their faults for rescheduling and they disrespected their candidate like that. And again, they rescheduled the next meeting due to local holiday. Too much for "carefully coordinated". Eventually, I had the meeting with their CTO at the third rescheduling. After all the waiting and patience, all I received were only silent and ignorance. I sent them email to ask about the result after but didn't receive any response. They didn't even bother to reply when I ping them on Skype. So after 2 weeks without hearing from them, I believed that was a "NO". I didn't get mad because I failed but I got mad at how they treat candidates. This is the most unprofessional and arrogant company I ever seen so far