Issue of witheld of retirement benefits in Indian Bank

I had produced a community certificate at the time of my joining in the Nationalised Bank, obtained from the competent authority in the prescribed form as specified as in G.I. Dept. of Per. and Trg., O.M.No. 36012/6/88. Estt. SCT, SRD III, dated 24.4.1990. After 8 years of completed service the bank has sent the community certificate which was issued by the below rank of competent authority (Tahsildar) for verification for the reason of the variation of caste noted in the school Transfer certificate. Accordance with the above said O.M., the Matriculation or School Leaving certificates are not accepted as a proff of caste at the time of initial appointment. Although the bank has sent the community certificate issued by the below rank of competent authority for verification. In this regard the verification report has been pending with the competent committee. My terminal benefits are withheld saying the above said reason. On the other side my community certificate which I produced at the time of my joining in the Bank has not been questioned. In this cconnection, whether the action of the concern Bank was in order. Kindly clarify.