Financial Modeling Tests and Puzzles

Sent me an Email which gave me joining date and even an Employee Code. When I went there they told me today is not your joining date we're sorry and asked me to leave for the day! They selected me for a position in return all I asked for an interview! I met other guy who was hired for the same job when discussing he said he wasn't even a graduate he had couple of backlogs and still I was asked to leave. For a company like CRISIL I was very disappointed cause it wasted so much of my time just 5 days before my exams!