Basically we've had a spat of people being charged for the wrong things.
So you say you're on X pump
Employee says £X amount of petrol
You say yes and pay
We then see you go back to the car at Y pump and drive off 
So we've now started saying the make of car (and colour if more than one of the same car)/amount to be paid and confirming the pump number with the customer
You'd think it fool proof as you should know the make and colour of your car even if you don't know how much fuel you're paying for. Apparently it's not
Customer - fuel on A please
Cashier - the red Audi? That'll be £X please
Customer - yep that's the one
Cashier - wayward pump D is getting back into his car and hasn't paid
Queue me legging it to him and him furiously telling me he's paid and that I should hire staff with more than half a brain cell - he stormed back in and had a right go.
Cashier tells him that he's told Her the pump and had confirmed that he was in fact the red Audi so had been charged as such.
Thankfully it was easily fixed
But seriously how dare he try to blame our staff when he couldn't be bothered to listen to her confirm his car and amount. Seriously a red Audi and blue Nissan at different ends of the forecourt are not the same. It didn't even register to him that he was paying £20 more than he should have been
Please give cashiers your full attention or at the very least don't blame them when you fuck up
- all identifying info (not that there is any ad this happens in petrol stations all over the country) had been changed