I am being unreasonable, just looking for sympathy!
Automated petrol station, hadn't used it before, you had to select options for £20, £40, £60, £80, £100 fuel, etc. I accidentally pressed the £100 option then thought it would take too long to start again, I would only put in £60. Of course charged for the full £100 on my online bank statement this morning. Its miles away too. No chance of getting the money back. I've only ever used automated services where it charges you for how much you actually take.