I asked for the procedure 3 times, they did not show me them. I know is long shot but can I sue them for not having the appeal hearing? Can I gain anything?

Thnak you for the answer. Sorry for delay in replay. The appeal was on Procedure ground. I was not given the right to appeal(the letter I got after the meeting did not mention that) ,the person who was a witness for the company side was actual a manager involved in the case, and they did not show me the Company Disciplinary Procedure which they claimed they have(The initial letter invited me for the hearing stated that they will fallow their own prodedure). I'm leaving the company now (I give my resignation) but I would like to just know if they are obligated to do the appeal hearing? By obligated I mean by the law.

I was having disciplinary hearing and has been giving first written warning. I have appealed against this decision. Is it compulsory for my employer to conduct the appeal hearing?