Estbar in London Luton Airport, Luton

Had 2 pints. Paid both buy pin. Just checked my balance. And have 3 transactions. 2 for the right price and 1 for another price. Bar man said my card never worked first time. Still was over priced for this transaction: 4.95 pounds does not seem that much. Until you think how many people go through this bar daily. And how many times this happens.