Shell Petroleum — Petrol quantity

I normally fill petrol for my car in shell petrol bunks b'se their measurement will be very correct. Always shell petrol bunk petrol filling reading for my car will be very slightly (very very marginal) less than my car petrol consumption reading. I always fill full tank and don't do top up.

Today I filled my tank full from jp nagar phase 1 shell petrol bunk ( where I regularly fill my tank), no top up. But petrol reading from bunk was 3 lits more than my car reading.

When I complained to employees ...they said our reading is correct. You pl check your car capacity...you pl refer your car manuals etc. I told them the car is with me for last 7 years...tried to explain. But they were in no mood to listen...just saying our reading is correct. Then told the I need to talk to manager then the person said he is manager - harish.

I told if you guys just don't want to listen or understand then we stop coming to shell petrol bunk ..his response was okay sir.

Hope shell management looks into this and corrects it. Otherwise it looses its trust and we stop going to shell petrol bunks