Validity of lateral entry mba course.

Sir, I am a bank clerk. I have applied promotion exam from clerical to General Banking Officer. Eligibility for this promotion been given: (a) Two years service as a clerk in bank. (b) Holder of Graduate Degree. and (c) Holder of an MBA degree. I was having all these qualification and applied online & submitted my application and it accepted the same. Further, my bank has come up with new provisions saying (a) MBA Degree-means two years regular, otherwise (b) if part-time 3 years duration. My MBA degree is as follows: I have done PGDBM (Post Graduate diploma in Business Management) regular 1 year course (class room study) from a affiliate college of recognized University. On above PGDBM basis I got admission in MBA lateral Entry of (3rd & 4Th semester ) from PTU, Jalandhar and passed. The mode was Distance and duration of course was 1 year. Both above courses are UGC recognised. I got MBA certificate as regular one it is not mentioned part-time/ful time etc. Now, my promotion exam result is kept in abeyance due to my MBA degree is not of 3 year duration,because the considered it as part time. And all other regular persons are promoted with effect from 1 feb 17. I have given a representation to consider my MBA( 1year regular PGDBM+ 1 year distance education MBA) as regular one as this is a typical case, at the time of applying the exam.I didnt get any reply in this regard and they allowed me for the exams. Please intimate me What is the legal view of this case? please guide me. Yours faithfully, PS KUMAR