Cancellation of Permanent Appointment to temporary

I am an employee of a Central University. I have been selected through a General Selection Committee for the post of Assistant Professor on a Plan post, to be placed on probation for a period of one year from the date I join my duty. I joined my duty as an Assistant Professor on probation 11 months back. Now, I have received a office order which states that my appointment as Assistant Professor (on probation) stands cancelled with immediate effect, and I am being placed on temporary position (contractual basis) till the current academic session, which is ending in 2 week time. The reason for the same is being communicated as an error in the making of the report by the administration after the selection committee and mis-interpretation of the recommendations of the selection committee. I have resigned from my previous employer and shifted from my home town to join at this Central University. I will not be able to go back and rejoin. No adverse remark has ever been made by the Head of Dept or Dean against me in this period till date. Please help me to find the correct way to get a positive solution in this regard and to be reinstated as a permanent employee.