The journey was a 'torture'. At the middle of the night, at 2:30am, when the bus reached Salem, we were all asked to alight from the bus (with luggage etc) and board another bus - without any prior information. Actually there was some issue with bus permit and the passengers from a Chennai to B'lore bus were 'exchanged' with the passengers in a Ernakulam to Chennai bus (passengers getting down from their respective buses and boarding the other bus) at Salem, at 2:30 in the night. When passengers questioned this, the staff got upset and started arguing with them. While proceeding from Salem to Pondicherry, the driver was attending many calls on his cell phone and responding to them, instead of driving carefully. The staff in the driver's chamber was playing songs loudly in his mobile phone, preventing people in the front seats from sleeping. Overall, it was a 'once in a lifetime' experience, no sane person will book tickets in this service again.