South Bengal State Transport Corporation [SBSTC] — Wrong information

Repeatedly called asking about morning buses from Midnapore to Kolkata of 19.9 but continuously they said that 4.40 pm bus in confirm but for other buses I need to call them after 8 pm on 18.9.After calling repeatedly after 8 pm, they picked up the call once and said that 5.30 am morning bus is confirm but didn't say a single word about seat booking.On 19.9 morning I just found that all the seats are booked in the 5.30 am Midnapore -kolkata bus.Why are you serving this wrong information?If needed at all, just check the call records to check the authenticity of my complaint.