Tamil Nadu State Transport Corporation [TNSTC] — Dinner stop in setc bus

Iam now(17th sept. 2016) travelling in setc Route no. H791 bus from chennai to ernakulam which started it's journey at 15:05 from c.m.b.t.
After 6 hours of journey the driver stopped vehicle for dinner in a hotel named 'AMMA' which is located opposite to VRS Engineering college, Arasur, after some kilometers from villupuram. Only porotta and dosa with egg curry is available. That's ok. But they charged 100 rs for 2 pieces of porotta and egg curry.!!.. Also the mineral water which labelled 25 rs as m.r.p, selling it for 30 rs.
This is too ridiculous from the driver side. He can park the bus in a decent hotel which does not exploit the travellers.
Very bad.