Ola Cabs / Ani Technologies — very high fare charges by ola

My booking id is [protected]. I had booked a mini ride on january 27, 2019 and was not shown a fare. There was no message of fare change or fare rise shown to me. I was charged 714 for 30 kilometres ride and time is 66 minutes, the driver told me this is a error a d i should contact customer care and they would refund me the amount. Now the customer care tells me i was told that the fare would change. This is not done. Fare is increased by ola system rs 254 without giving any information, ola system was not working properly. This is a big error. Please refund me the excess 350 bucks asap