Dear Khushboo
Along with other members' I share your anguish on the unfair treatment meted out to you.
Such instances are aplenty and most often it is the HR who have to do or are asked to do, this sordid task. In fact, most of the times, such terminations are not only unfair, but illegal too. However, as pointed out; its a war between David and Goliath, and the latter invariably wins in such cases.
In your case, however, it seems no legal infractions are involved as you were in probation. However, what is a matter of concern, is the manner in which it was carried out. Apart from it being a swift, ruthless action based on a flimsy reason; it deprived you, most importantly, of the time you could have utilized in searching for a suitable job enabling the continuity of your employment.
Many want to know the exact turn of events that caused it. Do respond back to let us know what exactly happened. It happens that senior people are shy of breaking thee bad news. At times, young inexperienced sub-ordinates are made the scapegoat. Is it what happened in your case? Why were you asked to communicate directly wwith the CEO ? Although. its not an illegal act, but surely highly un-conventional that a probationer has to deal with the CEO. were you set-up as the fall-guy ?
Also, do respond to let us know if you find these suggestions helpful.
Warm regards.