Interaction and interview for promotion in SBI

Dear Sir I am Manager in SBI. My promotional result for Chief Manager was in sealed cover due to disciplinary proceedings. After 3 months final verdict came and I have been given Administrative warning. After this Sealed cover opened and remarks was- Candidate is not suitable for promotion. I appealed against my non promotion to appellate authority who is DMD HR. My interview was scheduled on 5th January, thereafter it changed 2 times and finally conducted on 15th January. I have been called for interview on 15th at 9 .30 am but interview held at 4.30 pm. Interview was conducted through VC. Due to technical issues sometimes voice, sometimes visuals was disrupting during interview and due to this I was not not able to understand question clearly which was being asked by DMD HR. whole day I was sitting empty stomach this also affected my interview. I could not perform well in interview. Can I demand for re-arranging the interview. is there any provision for re-conducting any interview. Regards