Ola Cabs — Not honouring the confirmed cab booking

Address:

Bangalore, Karnataka, 560076

I have booked s Cab with Ola today to pick me up from Hulimavu at 7.30 pm. Ola confirmed the booking vide CRN[protected] at 17.05 hrs. At 19.16 hrs Ola sent a SMS reading as "You've got a free upgrade! CRN[protected]Driver MANJUNATH T.K. ([protected]), Silver Verito KA51C6068 will pick you up @ 7.30 pm 29 April.
The Driver called me at 7.15 pm to confirm the location to pick me up and said that he is on Begur and is coming. Since he did not reach till 7.35 pm, I called him again. He said he is coming. He did not reach till 7.47 pm. Again I called him. This time he did not answer my call. At 7.42 pm
I got a SMS from Ola reading as "Ola, Sorry Driver cancelled your booking CNR[protected] after waiting for your pick up longer than max. wait time". This is wrong.
I want to know why the Driver misrepresented the fact and why is disappointing it's customers like this by dishonring the confirmed booking at the last minute.
Regards,
Harischandra Achari,
Mobile [protected] and [protected].