are my employers in the wrong??

[Weenie1]

Before i booked our family holiday in feb this yr i filled im my daughters holiday form and asked my employer if i also needed to fill a form in for holiday leave. was informed No i did not need to, to then in april of this yr be asked to fill one in after i had booked and paid for my holiday, request for leave was declined but i went on holiday anyway. IM now having to have a disciplinary hearing for unauthorised absense from work which is classed a misconduct. My question is this i am being punished for taking leave but other work collegues have taken time off also and are not going through the same process, and it states in all our work contracts we are not allowed to take holidays during school term time as we are dinner ladies, so why am i having a disciplnary hearing and no others?? can my employers do this?

[Nerfmother]

I suspect that when in February your manager said she didn't know the term dates, if you had checked them or she had, she would have refused it there and then.
Unless she said it won't matter if it's term time, then I think you are probably going to face some sort of warning?