I attended interview there...but they didn't hired...

I attended interview there...but they didn't hired me..i came to the last round and also i performed very well..but the interviewer told me you are not eligible for this post..they have given me the intervew letter for MVC developer..but from the last round those guys announced me the result that, they don't need MVC developer.
So i was wasting the whole day for this intervew.