Tamil Nadu State Transport Corporation [TNSTC] — ECR Buses

I frequently travel from chennai to Kalpakkam throgh ECR buses. I take bus in guindy pondicherry bus stop. When conductor asked for ticket, I told kalpakkam them immediately he told me to get down as it wont stop in before pondicherry, and made me to get down at madhya kailash. Same way next 4 to 5 buses (all are ECR) refused to get me in and telling they dont stop. But the same bus while reaching kalpakkam, they are stopping and letting passengers inside to drop them at pondicherry. If stop is not there, why they are picking. Our department (Department of Atomic Energy in kalpakkam) got the permission from TNSTC to stop all ECR buses many years back as around 10000 central govt employees are residing in kalpakkam. The bus conductor and driver are very rudely behaving and not letting us inside the bus.