Biased judges at CAT Mumbai-remedies available to applicant

This question is with regards to the remedies available to applicant in case of biased judges in Central administrative Tribunal. In my case, in about six cases submitted to the Central administrative Tribunal Mumbai, one particular judge by name Mr R Vijay Kumar is passing adverse/unconnected and in irrelevant orders even without allowing applicant to speak. At many occasions, it is clearly evident thathe has made up his mind against the applicant. Complaint against him was made to High Court Mumbai, but they said, such an application be put up to competent authority that is principal bench of Central administrative Tribunal. After putting up the matter to the principal bench, the principal bench passed an order stating that, no action is intended to be taken. In such case, I feel that, I should request the tribunal, so that my cases are not put up to the bench in which Mr R Vijay Kumar is present. What are the legal options in such a case, and what will be repercussions? Please