Student — IOC petrol Mixing

I have a Honda Shine 125 cc bike. Recently i found my bike is not working properly and I did the check up for the complaint and i realise that there are so much of carbon accumulated inside the engine and all the mechanics were telling it is only due to the bad fuel.
I spend some 8000/- rupees for the repair. But here I would like to complaint against the petrol pump at Baroda, from where I used to fill my petrol all through the two years after buying my bike.
This petrol pump is really giving Kerosene mixed petrol and I would like to request to the authority to check it and take necessary actions.
Giving the details of petrol pump
State: Gujarat
City: Vadodara
Area: Fatehgunj
Petrol pump name: Indian oil corporation Petrol pump (Fatehgunj petrol pump)