termination without giving proper reason

I have received an email from my company which states non confirmation of employment as subject line on the last day of my probation period.They have not mentioned any reason except a clause which was there on the agreement that they can terminate the employment with whatsoever reason.the problem is before doing that they asked me whether i can commute by my own if i own a car and if they provide the pass to commute from delhi to gurugram.unfortunately i am not priviliged to own a car and i polietly refused the request. i get to know that my coworkers who joined with me still have their job as they can commute by their own.i emailed HR for a reason.Instead of relplying on the email he called me and informed me that it was managements call to make that decision.fare enough but he is still not giving me a valid reason that on what ground they took this decision that too in a phase of global crisis. and he refused to answer via email.i would request you to help