Domande di colloquio per Java Developer presso eCentric

I attended as 2 years experience. They conducted 2 rounds(Technical). I am cleared both round. They informed me that you got selected. after 4 days they called me to attend one more technical round. I qualified that round round also. And said same dialogue you got selected. They ask me to send my documents. I had shared all my documents. After one week they again ask me to attend one more round with client on online which is also technical. Finally I got rejected. This entire process took nearly 20 days. I have wasted these 20days of time and money also. They not even responded properly.