Essar Petrol Pump — petrol stealing while fueling the vehicle

I am regular customer of essar. I regularly fill petrol on my way to office at navakar petrol pump (Essar), kudalwadi, but while fueling they steal the petrol and not filling up completely as per requirement of customer. We are not expecting such service from essar. They must have to show '0' before filling up the petrol. But they dont do so. Pls do the needful and take some action against navakar petrol pump, kudalwadi, chikhalipune