Long lunch break

I have another question. I sometimes take long breaks. But I also strayed long in the office in most days with short breaks. Now, I'm being NTEd due to violation of break policy. I look into the break policy and it states there that it's applicable to supervisors, staff and officers but no definition what an officer is because in other policies, managers and executives are clearly mentioned or it will say all employees.

I am in full flexi schedule. I can come in anytime and just finish the 9 hour shift. I noticed that the guards would ask me if I'm leaving na whenever I stepped out of the office. I noticed that they don't do this to everyone except me. I felt that I'm being singled out.

I'd like to know if:
1. I can demand for other managers' records too to make sure that I'm treated fairly
2. Even if managers and executives are not part of the break policy, can I use it as a reason to contest the provision cited?
3. Is staying longer in the office more than 9 hours would be acceptable reason for long breaks?

why not just ask other managers directly how they are treated? if there is a written policy, i recommend you abide by it or get prior written permission before not doing so.