BP Poor Feedback & Service

I acquired a car rental vehicle, which was brand new with 2000km on the clock, right next to BP KYA Sands. I returned the vehicle the next day putting around 100km on it and the fuel gauge stated I used 1 "bar" of 8 on a 45 litre tank, so I used around 7 litres. On filling up as you need to return the vehicle on a full tank. I chose to fill up at BP KYA Sands as this was 100m from the rental place. The Fuel attendant presented me with a bill stating they filled 25.59 litres of fuel, which more than half a tank. I said there must have been a mistake and he said I must query it with BP.

BP Head Office did not answer complaints when logging onto their website in which I had to call to get service. After chasing up for over a month and CCing in their regional manager, they got BP Kya Sands to contact me. They contacted me and tried to say it must be a problem with the vehicle, which is impossible as the car was brand new and only 1 "bar" of 8 was missing on the gauge. They proceeded to check the camera system and get back to me. It has been over 3 months now with multiple request for follow ups from both BP Head Office and KYA Sands, no feedback.

This is very poor for BP.