Ola Money — Complainant regarding wrong debit transaction in my ola postpaid account

Sir,
I am having ola account having registered mobile no. [protected]. I had booked a ride and made the payment directly to driver at the end of trip. After that i didn't use ola app much and after few months i noticed that particular transaction is showing as due and had been debited from my ola postpaid account. Which i had already paid to driver directly. I am not liable to make the payment of this bill i had raised the concern several time but no one is responding. Kindly look into it else i will be constrained to take legal actions.