Wrong Fuel, trouble and strife

Hi, i’ve just done a Vauxhall Corsa 1.2 diesel in petrol, the customer had put 17 litres of diesel into his petrol car and he didn’t start it, he gave me a call and i went to sort it out for him.The guys wife was standing at the other side of the fuel station with her arms folded and she did not look happy, the guy said “i’m in trouble when i get home” and we both had a bit of a laugh. Once i finished the job she got in the car and slammed the door saying “i cant believe he’s done this… it’s so stupid”, so i wouldn’t want to be him when he did finally get home.