Andhra Pradesh State Road Transport Corporation [Apsrtc] — Unfairness of buses

The time is 4:26 and iam searching for an apsrtc bus to go to chittoor in vellore bus stand. Two apsrtc buses were boarding passengers but when i went near the bus the conductor standing near the door of the bus stopped me and asked where i want to go. I said "i want to go to chittoor". He told "no" even though chittoor is written as one of the intermediate stations on the side of the bus and it is not an express bus. One fellow (Iam not sure who he is) told me "this is the trend now-a-days". If intermediate stations are written on the sides of the bus, then why don't they allow passengers to travel to those places? It is not fair towards some passengers. At that time seperate apsrtc buses are not available to chittoor. What am i supposed to do? Wait till 6:00? For an apsrtc bus that is destined to chittoor or go for some private bus? In both cases it affects either me or the organization's self respect. I hope this changes after my complaint is processed. Thanking you in advance