Tata Memorial Hospital — I am complaining about appointment.

Yesterday i had booked an appointment in general opd for 12. 30 pm for the next day. The appointment was confirmed. Here, i am today standing at the opd, where the people at the counter say, my doctor is not available today. He comes on friday and tuesday. Then why my appointment was confirmed. My whole day got wasted. I was asking for the reason, but the two ladies at the counter kept ignoring me.