Ola Cabs / Ani Technologies — the bad behaviour and use of foul words by a driver

Address:

Khordha, Odisha, 751024

I had booked a cab on 15th of feb, 2019 for my grandparents from capital hospital, bhubaneswar, odisha to nuagaon, gangotri nagar, bhubaneswar, odisha under the driver named, santosh kumar singh, holding the cnr [protected], white grand i10.
His contact number is: [protected].
When i asked him to wait for couple of minutes taking in account my grandparents' age, which is around 92years, he shouted at me and abused me by using bad words and foul names. Then he threatened me by saying he will see to it how my grandparents reach home safely.
If this type of drivers are hired, then how can we vouch of the safety of the person who rides? Please ask the driver a proper explanation and if he cannot change his behaviour, then his licence should be cancelled.