Ola — driver behavior

I had taken an ola rental on 16th of january 2019 for 4 hours and the driver told me that in case 4 hours is complete he will leave and go for which i told him that there is overtime charges as mentioned in the ola app. So i made the driver talk to the customer support services. They told me after 4 hours it's on the driver to continue or end. I had started at 1:30 pm and by 3:30 the driver started saying that 4 hours is about to be over and started screaming on top of his voice using a foul language and threatening way. I asked him to stop the car and got down and rang the ola customer support and asked them help as i was feeling unsafe with this driver and asked them to end this and arrange for another car from where i stopped for which they told me to do it myself and they cannot do anything from their side. Then i spoke in the safety department and they said that i would be charged for 3 hours as i completed 2 hrs 30 mins and rest will be refunded and to arrange the cab myself as they can't help even though i told them the language, tone and body language of the driver was very threatening and bad. Later i took an uber and returned to my hotel. When i asked the safety department that what action has been taken against the driver they said that 1 star rating which was given by me and in future if he does similar thing, he may by suspended as if they were waiting for something to happen. Even few years back, i was abandoned by an ola rental driver on mid way but no action was taken. So i think from my experience that if we are travelling by ola we should travel at our own the risk not expecting anything from customer support.