Cabbazar — Harrasment By CAB Driver

I have booked the taxi for my parents from bhopal to anumala township gujarat after paying 1k advance online. the pick up was scheduled at 3:45 at bhopal railway station, at per the rules of cab bazar driver will not ask for any money till the ride is completed except state tax and toll tax.
as soon as journey was started the driver asked the money for fuel on which my parents paid him 3k at the same time for fuel.
The cab was broke down around 11:30 in the night at some unknow place inbetween bhopal and anumala township.
Some unknown traveller help the cab driver to tow the taxi to some nearby location where mechanic was available so that the journey would be complete.
When all efforts were gone in vain after trying for 2 hours, my parents ask the driver to gave them the luggage so they can ask those travellers to lift them to the sestination.
on which driver asked them to pay whole money or he will not give the luggage at any cost and start harassing them, with the help of the
travellers my parents leave that place after paying 500 to the driver and reached home in the morning.
Next day the driver has started the messages to me and my parents over whatsapp and asking for remaining amount to pay, when we haven't replied he start abusing my parents through audio messages with maa behan ki galiyaan.
than i asked them to block him immediately.
this is how pathetic cab bazar services is, driver has harassed my family.