English Wizards interview questions

I was very keen working with English Wizards. They first cancelled our first interview, I didnt make any problem. So we scheduled another one, they cancelled the second one as well. Later they told me to pick another time, I said okay. They didnt confirm the time i told which i am available, and at the last minute they sent me an email of interview invitation. I responded and said, they did not confirm the time so i didnt know we were having an interview today. And no answer. I don't think they are professional. They cancelled the interview twice and didnt bother to answer back.