Ola — Double charged for Taxi Ride

I had booked ola cab in bangalore to travel from Malleswaram to Airport this morning at 1200 am. The driver was Tulasi Das Rao. I had booked the ride for cash payment.
Upon boarding the driver asked me to pay by cash and not ola money. I agreed.
The bill for the ride was 720. When i paid him the amount, but found that the same amount was also deducted from my Ola Money account also. Thus I was charged double for the ride.