Kpn Travels — Bus delay in journey

Booked a KPN travels bus from kovilpatti (09:45P.M) to bangalore (6:30A.M). Bus arrived at kovilpatti by 11:00 P.M with a delay of 1hour 45 mins. Through the journey bus was too slow and driver had many stopings in between for his tea. At 6:58 bus was still at salem which was supposed to cross at 3 to 4A.M. Driver is not giving proper justification for his delay. Bus will reach bangalore by 10:00A.M or 11:00 A.Mbut it was supposed to reach by 6:30 A.M