Uber India — charged extra for the distance not travelled

Uber hire was used to travel a distance of 76kms (Vallakom-udayanapuram road -lulu mall -vallakom - udayanapuram road) in kochi. I was charged for 152kms. Uber hire accepts payment mode as cash only and i paid 900/- extra cash to the driver. Have been submitting requests in the app to refund for the extra kms charged and no response till now. There is no customer care contact number and the driver is not picking up the calls to give a clarification on how can be i charged for double the travel distance. Request to look into this issue and refund asap