I had a same experience with Wings Radio cabs pune. I have booked it in Diwali period at 4:15 pm , they informed me that cab will be ready at 4:00 pm according to the buffer time of 15 mins. But when I came to the pick up point my cab didn't came uptil 4.30 and no confirmation message also and when I tried calling their number it was continuously busy. Finally I had to take rickshaw at eleventh hour which dropped me at exact time of departure of my bus. Finally the driver responded at 4:45. Its a pathetic service in such a rush period of Diwali.