Ola Cabs / Ani Technologies — driver delayed my pickup and cancellation

I book a car micro car at 7'o' clock. 7 minutes distance for driver to our home. Driver pickup my first call and said wait will come with 5 minutes, we wait half an hour driver wasn't pick my call and car was not reached, so i cancelled my trip. I applied coupon code on that ride, kindly refund my coupon and help next trip for my cancellation money. Kindly help.