Altius Investech interview questions

It was a pretty bad experience because they made me make two assignments very much detailed and I didn't get the offer. It was through campus Placement. I was going to be interviewed by the head of the company, but I don't know he got busy or something like that, and it was just cancel and then they gave me another assignment, which was just not it and then I got rejected without any mistake or you know any reason given by them .so pretty bad