Accenture Automation Test Engineer interview questions

I was referred by a friend and got a call for position of automation. First round was online test, cleared it and then I was called at their office for F2F discussion. After waiting for 2hrs they informed few people including me that the panel is not available hence we can't proceed with the interview which was pathetic experience. They said that they will arrange a telephonic discussion and we agreed to it. My telephonic round was scheduled and I was waiting for the call but I didn't have any call. Again I got a call from HR for rescheduling the interview and same thing happened for second time as well. Post that, I have sent them multiple chaseup but no one ever responded. Worst experience! Never expected such a behaviour form such a reputed MNC.