Indian Oil Corporation — petrol pumps

RESPECTED SIR, i want to complaint about Indian oil petrol pump KR Road, Jayanagar 7th block Banglore they are not filling correct amount of petrol and if we ask they are showing goondaisam if we ask to fill for 100 rs he will first set for 30 and stars will after a while he will say sorry and put for 70 and fills the same experians about 8, 9 of my friends had in that we can under stand its not a accedent and its a planed trick and other fmous trick is if we give 500 and fill for 100 he will count 400 and gives onely 300 if we ask he will say i gave 400 THIS IS SAME AS ROBBERY ... if we complaint the pump manager she is behaving rude they wont give u testing tools like filter papper as indian oil says check and fill