TNSTC — Different ticket fare collected with different conductor for the same stage & same bus

Address:

Tirunelveli, Tamil Nadu

I travelled in Tiruchendur (1 2 3) Bus yesterday at 5.45 pm (sankarankovil - tirunelveli) (28.01.2015) . A conductor collected Rs.8 (7+1) for my village.But in SFS also the fare is only Rs.7. I travelled today by the same bus, another conductor collected Rs.7 (7). It is not a matter for ONE rupee. But The first conductor behaved very rudely when i asking about extra ONE rupee charge. also he did not give a single EIGHT rupee ticket.He gave 7+1. I want to know the exact fare.