Sat. 26th Jan 2019, Liverpool Airport. I presented at sleazyrent office on time, with all required docs to complete car hire contract. Fuel deposit taken, using credit card and 3 digit cvv #. Time to make the "security deposit" of 1500 pounds. This was a "chip and pin" operation; using the same credit card. I made a mistake in entering my 4 digit pin code. The card reader recognized this, declined the transaction and requested I remove my card. When I replaced my card, and repeated the operation using the correct 4 digit pin code, the reader informed me my credit card had been cancelled. I stepped outside the office and called Barclaycard. They told me that 3 INCORRECT PIN ENTRIES HAD OCCURRED, and as such their auto fraud software had cancelled any further chip and pin entries. The sleazyrent card reader had attempted multiple authorization of payments within the space of 2 seconds. As I no longer had a working credit card, I could not complete the car hire contract. 2 days later I phoned Rentalcars (agents who I booked with, and who sold me on to sleazyrent), and informed them of the fraud attempt. They said (suspiciously quickly) they would refund me the booking fee; made 3 weeks prior to the actual rental date. 9 working days later, I have no refund. I am fortunate to have been refunded already by Barclaycard. Me, sleazyrent, Rentalcars and Barclaycard all know exactly what is going on here; but the standard rules of business apply, so nothing will change. Credit cards don't get cancelled after one incorrect pin entry.