Ola Cabs – Demanding Extra payment after the payment is Made as per the Invoice

Dear Sir/Madam, I am a regular User of OLA Cab, I had a OLA drive today (4th Jan 2016) Morning 5 AM initially a bill was generated CRN 168603160. for Rs.279/- .I Paid driver the bill and de-boarded the cab.after few mins i am receiving one more mail and message from OLA revising the Invoice CRN 168603160.to Rs.451/- ., Requesting me to pay additional amount Rs.172/- and it is mentioning that Rs.172 /- is pending against my name. Kindly Correct my account in order for me to use the cab in my future rides else i have to shift to some other operator. Hope you will take action and correct my account. Regards Syed Zaidi